Advanced Powder Technology最新文献_第4页

Probing the improved collecting ability of dodecyl phosphate/poly-amine cation-anion association collector towards scheelite 探讨了十二磷酸/多胺正阴离子缔合捕收剂对白钨矿的捕收能力

IF 4.2 2区工程技术

Advanced Powder Technology Pub Date : 2025-06-24 DOI: 10.1016/j.apt.2025.104977

Wei Chen , Qiqiao Liu , Jing Qi , Guangyi Liu

{"title":"Probing the improved collecting ability of dodecyl phosphate/poly-amine cation-anion association collector towards scheelite","authors":"Wei Chen , Qiqiao Liu , Jing Qi , Guangyi Liu","doi":"10.1016/j.apt.2025.104977","DOIUrl":"10.1016/j.apt.2025.104977","url":null,"abstract":"<div><div>Efficient flotation of scheelite is very important for the safety of tungsten resources. A brand new collector, i.e., cation–anion association, was designed by mixing potassium dodecyl phosphate (MAP-K) with amines including diethylenetriamine (DETA), triethylene tetramine (TETA) and tetraethylenepentamine (TEPA). The collecting performance of these cation–anion association collectors toward scheelite were systematically studied through micro-flotation, zeta potential, contact angle and adsorption capacity detection. The micro-flotation results implied that cation–anion association collector TTK (MAP-K and TETA at 2:1 M ratio) performed excellent collecting ability toward scheelite, and the recovery reached to 97.53% under concentration of 5.0×10<sup>−4</sup> mol/L TTK, while that was only 70.37% with MAP-K. It was found that the zeta potential of TTK-treated scheelite was positive shifted, implying that the amino group was protonated in cation–anion association of TTK. The positively charged TTK may have an electrostatic attraction of scheelite, facilitating the adsorption of phosphate groups in TTK on scheelite surface. The adsorption energy of the TTK (−11.082 eV) was nearly the twice that of MAP<sup>−</sup> (−5.072 eV). Therefore, DETA facilitated the adsorption of MAP-K on scheelite and strengthened the hydrophobicity of scheelite.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 8","pages":"Article 104977"},"PeriodicalIF":4.2,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144470704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of external nitrogen sources on the electrochemical properties of nitrogen-doped carbon materials from bio-oil distillation residue 外部氮源对生物油蒸馏渣氮掺杂碳材料电化学性能的影响

IF 4.2 2区工程技术

Advanced Powder Technology Pub Date : 2025-06-24 DOI: 10.1016/j.apt.2025.104980

Jing-tao Li , Dong-hong Nan , Qing-xi Qu , Yi-Yang Zhang , Xi Luo , Qi Niu , Dan Yan , Qiang Lu , Kai Li

{"title":"Effects of external nitrogen sources on the electrochemical properties of nitrogen-doped carbon materials from bio-oil distillation residue","authors":"Jing-tao Li , Dong-hong Nan , Qing-xi Qu , Yi-Yang Zhang , Xi Luo , Qi Niu , Dan Yan , Qiang Lu , Kai Li","doi":"10.1016/j.apt.2025.104980","DOIUrl":"10.1016/j.apt.2025.104980","url":null,"abstract":"<div><div>Bio-oil distillation residue is a potential material for the production of activated carbon (AC) owing to the high carbon content and low ash content. The exogenous nitrogen sources have significant effects on the characteristics of nitrogen-doped AC. However, the relationship between nitrogen sources and the performances of nitrogen-doped AC remains ambiguous. In this study, four representative nitrogen sources, piperazine, urea, melamine, and polyaniline, are carefully selected to investigate their effects on the physicochemical and electrochemical properties of nitrogen-doped AC. The results show that the introduction of nitrogen sources increases the nitrogen contents of ACs, with the doping capacity ranked from the highest to the lowest as follows: polyaniline (5.42 wt%), piperazine (1.43 wt%), urea (1.28 wt%), melamine (0.92 wt%). Furthermore, compared to the specific surface area (SSA) of the AC without nitrogen-doping (1454.20 m<sup>2</sup>/g), the introduction of piperazine, urea, and melamine leads to increases in SSA, measuring 1552.69 m<sup>2</sup>/g, 1832.56 m<sup>2</sup>/g, and 1928.11 m<sup>2</sup>/g, respectively. However, the introduction of polyaniline decreases the SSA to 795.60 m<sup>2</sup>/g. The nitrogen-doped AC prepared by melamine shows excellent electrochemical properties, whose specific capacitance reaches 350F/g in 1 mol/L H<sub>2</sub>SO<sub>4</sub> three-electrode system with a current density of 1 A/g.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 8","pages":"Article 104980"},"PeriodicalIF":4.2,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144366001","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation of phosphogypsum-based explosion suppressant to reduce the severity of dust explosions 磷石膏基抑爆剂的研制，降低粉尘爆炸的严重程度

IF 4.2 2区工程技术

Advanced Powder Technology Pub Date : 2025-06-23 DOI: 10.1016/j.apt.2025.104976

Qingwu Zhang , Xun Zou , Jianpeng Zhang , Yuhang Bi , Changxin Li , Yajie Bu , Yuan Yu , Juncheng Jiang

{"title":"Preparation of phosphogypsum-based explosion suppressant to reduce the severity of dust explosions","authors":"Qingwu Zhang , Xun Zou , Jianpeng Zhang , Yuhang Bi , Changxin Li , Yajie Bu , Yuan Yu , Juncheng Jiang","doi":"10.1016/j.apt.2025.104976","DOIUrl":"10.1016/j.apt.2025.104976","url":null,"abstract":"<div><div>This study utilizes industrial waste phosphogypsum (PG) leachate as the raw material to prepare a magnesium ammonium phosphate (MAP) powder suppressant through reaction system adjustment and coprecipitation reactions, achieving the recycling and reuse of waste materials. The impact of the MAP powder suppressant on the explosion of nitrile butadiene rubber (NBR) dust was investigated in a 20-L spherical explosion vessel and a 1.2-L Hartmann tube. The results indicated that MAP has significant suppression effect on NBR dust explosion. When 70 % MAP was added, the maximum explosion pressure (P<sub>max</sub>) of NBR dust decreased from 4.8 to 1.55 bar, and the explosion index (K<sub>St</sub>) dropped from 35.75 to 10.61 bar·m·s<sup>−1</sup>. When 90 % MAP was added, the NBR dust explosion can be completely suppressed. Additionally, with the addition of 50 % MAP, the ignition time of NBR dust was delayed by 7 ms, the duration from the maximum flame moment of the dust explosion to complete flame extinction decreased from 515 to 306 ms, and both the flame brightness and flame area were also reduced. Thermal analysis research showed that the explosion suppression mechanism of MAP powder suppressant is mainly through physical and chemical aspects, including effects of physical barrier, endothermic cooling and consumption of free radicals.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 8","pages":"Article 104976"},"PeriodicalIF":4.2,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144366000","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of thermal treatment on hydrophilic/hydrophobic structure of hollow silica nanoparticles 热处理对中空二氧化硅纳米颗粒亲疏水结构的影响

IF 4.2 2区工程技术

Advanced Powder Technology Pub Date : 2025-06-20 DOI: 10.1016/j.apt.2025.104969

Yuki Nakashima , Hirokazu Katsui , Satoru Kawase , Tatsuki Ohji , Manabu Fukushima

引用次数: 0

Effect of MoS2 lubricant content on percolation behaviour in powder compression 二硫化钼润滑剂含量对粉末压缩中渗透行为的影响

IF 4.2 2区工程技术

Advanced Powder Technology Pub Date : 2025-06-19 DOI: 10.1016/j.apt.2025.104967

Wei Zhang, Xu Gong, Weichang Wu, Chenkang Lin, Kewen Cheng, Rongxin Chen, Guofu Lian

{"title":"Effect of MoS2 lubricant content on percolation behaviour in powder compression","authors":"Wei Zhang, Xu Gong, Weichang Wu, Chenkang Lin, Kewen Cheng, Rongxin Chen, Guofu Lian","doi":"10.1016/j.apt.2025.104967","DOIUrl":"10.1016/j.apt.2025.104967","url":null,"abstract":"<div><div>Considering the influence of lubricant content on the densification quality of the compactor, the percolation behaviour between particles, and the changes in mechanical behaviour among them, powder pressing was performed using a universal testing machine to verify the effect of the infiltration behaviour of solid particle lubricants on compaction and mechanical performance. The test results reveal that the transverse percolation of lubricant particles at the top of the compacted metal powder becomes more pronounced during the pressing process. Additionally, as the lubricant content increases, the intensity of particle percolation also increases. MoS<sub>2</sub> solid particle lubricants improve the density, hardness, and porosity of the compact and significantly enhance the densification. However, excessive lubricant leads to agglomeration, which reduces the compressibility of the compacted metal powder. This research expands the theories of powder forming mechanics and particle percolation, providing valuable guidance for further improving the densification of metal powder compacts.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 8","pages":"Article 104967"},"PeriodicalIF":4.2,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144321034","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental investigation of coarse coal slime fluidization characteristics in three-phase fluidized beds 粗煤泥三相流化床流态化特性试验研究

IF 4.2 2区工程技术

Advanced Powder Technology Pub Date : 2025-06-18 DOI: 10.1016/j.apt.2025.104973

Yiqing Zhang , Jincheng Liu , Qinglin Yin , Wenlong Meng , Shihao Ding , Yaowen Xing

{"title":"Experimental investigation of coarse coal slime fluidization characteristics in three-phase fluidized beds","authors":"Yiqing Zhang , Jincheng Liu , Qinglin Yin , Wenlong Meng , Shihao Ding , Yaowen Xing","doi":"10.1016/j.apt.2025.104973","DOIUrl":"10.1016/j.apt.2025.104973","url":null,"abstract":"<div><div>The gas-liquid-solid fluidized beds are highly effective for the separation of coarse coal slime, but their hydrodynamic behavior requires further clarification. This study investigates flow regimes based on real-time pressure fluctuation signals measured using micro-pressure sensors. A comprehensive analysis of pressure signal dispersion was conducted through pressure fluctuation curves and probability density functions. The critical liquid velocity for fluidization was identified at approximately 6*10<sup>−3</sup> m/s, based on inflection points in pressure drop-velocity curves. Fixed beds exhibit elevated standard deviation, skewness, and kurtosis, signifying instability and non-uniformity, whereas fluidized beds display markedly lower time-domain values. Further refinement of flow regime classification can be achieved through frequency domain analysis, which provides enhanced characterization of particle and bubble dynamics within the fluidized bed system. Fluidized beds exhibit low overall pressure fluctuation energy, with power concentrated in low-frequency regions (<10 Hz) at low gas velocities. When the gas velocity exceeds 1.5*10<sup>−3</sup> m/s, energy shifts toward higher frequencies (10–20 Hz), reflecting intensified bubble turbulence. This analysis facilitates the further delineation of fluidized bed into the bubble dispersion regime and particle turbulence regime. The investigation of fluidization characteristics clarifies the environmental features in fluidized flotation, thereby laying a solid foundation for further experimental exploration and mechanistic studies of mineral separation in three-phase systems.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 8","pages":"Article 104973"},"PeriodicalIF":4.2,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144312627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Discrete element method in polymer processing – Method for development of material models 聚合物加工中的离散元法。材料模型的开发方法

IF 4.2 2区工程技术

Advanced Powder Technology Pub Date : 2025-06-17 DOI: 10.1016/j.apt.2025.104968

Jan Landgraeber, Florian Bruening

{"title":"Discrete element method in polymer processing – Method for development of material models","authors":"Jan Landgraeber, Florian Bruening","doi":"10.1016/j.apt.2025.104968","DOIUrl":"10.1016/j.apt.2025.104968","url":null,"abstract":"<div><div>Solids conveying can be a key aspect for polymer processing equipment and is typically simulated utilising the Discrete Element Method (DEM). As material models for the DEM are limited in the accuracy of particle shape representation, behaviour of bulk material can deviate between simulations and reality. Therefore, a defined approach for developing material models is required in order to improve the accuracy of numeric simulations. This need is intensified, as recycling processes with direct processing of regrind with complex particle shapes become more common. In this paper, an approach commonly referred to as calibration is applied to several polymer pellets as well as regrind. The approach is altered in order to produce accurate models suited to replicate the conditions (flow conditions, pressure and relative movement) occurring during polymer processing in screw machines. A method for material model development is defined, focusing on calibrating the coefficient of rolling friction based on an angle of repose test and subsequently assessing the representation of the coefficients of friction in a shear cell and bulk density in annular-recess-shaped containers. The developed single- and multi-sphere models can be used for further investigations on the behaviour of polymer processing screw machines.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 8","pages":"Article 104968"},"PeriodicalIF":4.2,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144306374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing electric virtual impactor performance with condensational growth and efficient charging for size-selective sampling of fine and ultrafine particles 利用凝聚生长和高效充电增强电虚拟冲击器性能，用于细颗粒和超细颗粒的尺寸选择取样

IF 4.2 2区工程技术

Advanced Powder Technology Pub Date : 2025-06-17 DOI: 10.1016/j.apt.2025.104972

Muhammad Zeeshan Zahir , Kareem Akhtar , Se-Jin Yook

{"title":"Enhancing electric virtual impactor performance with condensational growth and efficient charging for size-selective sampling of fine and ultrafine particles","authors":"Muhammad Zeeshan Zahir , Kareem Akhtar , Se-Jin Yook","doi":"10.1016/j.apt.2025.104972","DOIUrl":"10.1016/j.apt.2025.104972","url":null,"abstract":"<div><div>An electric virtual impactor can be used for size-selective sampling of airborne particles by utilizing an electric field to segregate particles based on their size, enabling only particles of a specific size range to be collected. This study utilized a condensational particle growth system to improve the aerosol particle charging efficiency and electric virtual impactor performance. A condensational particle growth system and a corona-needle unipolar charger were used together. Polydisperse particles ranging from 10 nm to 5 μm were grown to bigger droplets and charged to a high charge level in the corona needle charger before drying them in the evaporator. A charge level of more than 50 charges per particle was achieved for sizes of 20, 30, 42, and 55 nm. The highly charged particles were then sampled in the electric virtual impactor. The lower cutoff size of the electric virtual impactor could vary in the range from 30 nm to 1 μm while the upper cutoff size was fixed to 2.5 μm based on inertial separation mechanism. The developed system is expected to be very useful in sampling fine and ultrafine particles under normal pressure conditions, even by setting the particle size range suitable for the sampling purpose.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 8","pages":"Article 104972"},"PeriodicalIF":4.2,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144306375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of nano-CaCO3 on microstructure and magnetic properties of soft magnetic composites (SMCs) containing FeSiCr and amorphous FeSiBCr powders 纳米caco3对含FeSiCr和非晶FeSiBCr软磁复合材料微观结构和磁性能的影响

IF 4.2 2区工程技术

Advanced Powder Technology Pub Date : 2025-06-14 DOI: 10.1016/j.apt.2025.104970

Yangyang Su , Liang Qiao , Jingwu Zheng , Yao Ying , Wei Cai , Juan Li , Jing Yu , Wangchang Li , Shenglei Che

{"title":"Effects of nano-CaCO3 on microstructure and magnetic properties of soft magnetic composites (SMCs) containing FeSiCr and amorphous FeSiBCr powders","authors":"Yangyang Su , Liang Qiao , Jingwu Zheng , Yao Ying , Wei Cai , Juan Li , Jing Yu , Wangchang Li , Shenglei Che","doi":"10.1016/j.apt.2025.104970","DOIUrl":"10.1016/j.apt.2025.104970","url":null,"abstract":"<div><div>In this study, soft magnetic composites (SMCs) containing crystalline FeSiCr and amorphous FeSiBCr powders were prepared using nano-CaCO<sub>3</sub>/epoxy resin as an insulating layer at the low molding pressure. The microstructure and magnetic properties of the composites were investigated by SEM and meassuring resistivity, permeability, and magnetic core loss. The results show that the nano-CaCO<sub>3</sub> addition with 1–5 wt% contents benefits dispersing the composite magnetic powders more effectively and improving the density and permeability. The magnetic core loss initially increases and subsequently decreases again with the increase of nano-CaCO<sub>3</sub>. By loss separation, it is found that the hysteresis loss and residual loss are the predominant, while the eddy current loss is relatively small in the frequency range of 200–1000 kHz. Based on the results, the influencing mechanism of nano-CaCO<sub>3</sub> on the microstructure and magnetic properties was discussed.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 8","pages":"Article 104970"},"PeriodicalIF":4.2,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144280200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Construction of novel double S-scheme TiO2-x/BiOCl/BiCl3Br-CTA nanocomposites with quantum dot size for the photocatalytic degradation of pollutants 新型双S-scheme TiO2-x/BiOCl/BiCl3Br-CTA量子点纳米复合材料光催化降解污染物的构建

IF 4.2 2区工程技术

Advanced Powder Technology Pub Date : 2025-06-14 DOI: 10.1016/j.apt.2025.104961

Arezou Saadati , Aziz Habibi-Yangjeh , Alireza Khataee

{"title":"Construction of novel double S-scheme TiO2-x/BiOCl/BiCl3Br-CTA nanocomposites with quantum dot size for the photocatalytic degradation of pollutants","authors":"Arezou Saadati , Aziz Habibi-Yangjeh , Alireza Khataee","doi":"10.1016/j.apt.2025.104961","DOIUrl":"10.1016/j.apt.2025.104961","url":null,"abstract":"<div><div>In this study, TiO<sub>2-x</sub>/BiOCl/BiCl<sub>3</sub>Br-CTA (T<sub>OV</sub>BBOC) nanocomposites, in which CTA denotes cetyltrimethylammonium cation, were fabricated through a facile hydrothermal method. The nanocomposites were investigated for photocatalytic degradation of azithromycin (Azi), tetracycline (TC), methyl orange (MO), fuchsine (FS), and rhodamine B (RhB) upon visible light. The photocatalytic efficiencies of T<sub>OV</sub>BBOC-2 were 37.2, 15.3, 20.2, 13.8, and 5.59 times higher than TiO<sub>2-x</sub> (T<sub>OV</sub>) and 18.1, 22.1, 16.6, 20.3, and 14.2 folds larger than BiOCl/BiCl<sub>3</sub>Br-CTA for the degradations of Azi, TC, MO, FS, and RhB, respectively. Furthermore, the cycling tests confirmed that the T<sub>OV</sub>BBOC-2 nanocomposite displayed a high photostability. The significant photocatalytic performance of T<sub>OV</sub>BBOC-2 heterojunction was mainly attributed to the increased visible-light absorption and a lower recombination rate of photogenerated charges. A photo-removal mechanism on the T<sub>OV</sub>BBOC-2 photocatalyst was also proposed based on band position and radical trapping tests. Importantly, the biocompatibility of the TC solution after treating over the T<sub>OV</sub>BBOC-2 nanocomposite was studied via the growth of wheat seeds. The current research offered a promising route for fabricating an effective visible-light-driven material for environmental remediation.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 8","pages":"Article 104961"},"PeriodicalIF":4.2,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144289190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0