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91.
伴随20世纪70年代西方翻译界的文化转向,翻译研究的方向开始从静止的翻译标准转为翻译实践中主体性的问题。但是,无论是在笔译和口译中,关于翻译主体问题,至今翻译界没有一个统一的标准。以关联理论为基础,从最佳关联、明示与推理这两个方面出发,并结合相关的个人教学实例和口译实例进行分析说明,从而对翻译主体问题进行阐述和解答。 相似文献
92.
Jian Wang Jun Li Xinfeng Wang Xiaochuan Mi Shengen Zhang 《Bulletin of Materials Science》2011,34(7):1477-1482
The rapid heating effects on the microstructure, texture and magnetic properties of 3% Si non-oriented electrical steel has been investigated through optical microscopy, X-ray diffraction and Epstein frame. The results show that recrystallized grains were refined with increased heating rate, caused by the nucleation rate increase, which is faster than the growth rate due to rapid hearting. With the heating rate increase, the characteristic {111} recrystallization fibre of cold-rolled steel was depressed, but the beneficial 〈001〉//RD and 〈001〉//ND fibres were significantly strengthened. Although the grain-size decreases with heating rate increasing, the optimal magnetic properties can also be obtained through the recrystallized grain-size and texture optimization by rapid heating. In this research, we find the magnetic properties optimization can be obtained when annealed with 100°C/s heating rate: the core loss (P 1·5/50) decrease 13% and the magnetic induction (B 50) increase 3%. 相似文献
93.
主要探讨了汞灯、金卤灯、钠灯电弧管在使用过程中管壁发黑的问题。以物理化学变化为理论基础,以"电弧管使用后期发黑"和"电弧管初次燃点发黑"为研究对象,结合电弧管生产工艺流程,分析了管壁发黑的根本原因,为解决电弧管管壁早期发黑寻求最佳的解决方法。 相似文献
94.
95.
Ja Young Park Mi Ae Kim Seung Jae Lee Jongjin Jung Hye Mi Jang Pravin P. Upare Young Kyu Hwang Jong-San Chang Joung Kyu Park 《Journal of Materials Science》2015,50(1):334-343
This study describes the synthesis of carbon-encapsulated iron nanoparticles using an ultrasonic method and also investigates their catalytic activity. These nanoparticles have been prepared using ultrasonic irradiation followed by annealing at various temperatures. As the annealing temperature of as-prepared α-Fe2O3 nanoparticles increased, the sample transformed into γ-Fe2O3, Fe3O4, and Fe nanoparticles via the reduction process without requiring any additional reducing agents such as H2 gas, thus, creating a carbon shell surrounding the nanoparticles. By controlling the experimental conditions, Fe nanoparticles of various sizes can be formed with diameters in the range 100–800 nm; these nanoparticles are tightly encapsulated by 20-nm-thick carbon shells. Because of their high saturation magnetization 212 emu g?1, the carbon-encapsulated Fe nanoparticles can be used for magnetic resonance imaging with a dramatically enhanced efficiency compared to commercially available T 2 contrast agents. Moreover, the carbon-encapsulated Fe nanoparticles showed its superior catalytic activity and reusability for the hydrogenation of biomass-derived levulinic acid to GVL (99.6 %) in liquid phase. 相似文献
96.
97.
Yaqing Chang Xiaofei Tian Weijie Zhang Fenjie Han Shun Chen Mi Zhou Zhenguo Pang Shoubing Qi Wenping Feng 《International journal of molecular sciences》2016,17(9)
Heat tolerance is a target trait in the selective breeding of the sea urchin Strongylocentrotus intermedius, as it plays an important role in the survival and growth of cultured S. intermedius during summer. We investigated family growth and survival response to two temperature treatments to evaluate the genotype by temperature interaction (GEI) in the family selection of S. intermedius. Sea urchins from 11 families were exposed to two simulated water temperature environments—high temperature (HE) and control temperature (CE)—for 12 months, with each experiment divided into four periods (P1, stress-free period I; P2, stress-full high period; P3, stress-response period; and P4, stress-free period II) based on the temperature changes and the survival. Test diameter (TD), body weight (BW), and survival rate (SR) in HE and CE were measured monthly. Effects of family, temperature, and family-temperature interaction on TD, BW, SR, and specific growth rate (SGR) for BW were examined. In CE, BW differed significantly between families in P2, P3, and P4, while TD differed significantly between families in P3 and P4 (p < 0.05). In HE, family had significant effects on BW in P4, and on TD in P3 and P4, while temperature had significant effects on SR, TD, and BW in P3 and P4 (p < 0.05). GEI effects were not significant for TD or BW; however, family ranking changes revealed the existence of GEI in SR. The GEI results indicate the necessity of applying family selection in CE and HE for SR, but not for TD or BW. These results may provide a guide for aquaculture and selective breeding of S. intermedius under temperature pressure. 相似文献
98.
The adhesion between warp sizing and fiber was systematically studied by using the roving method.Cotton roving and polyester roving were sized with various concentrations between 0.01% and 2.50% of acid-thinned starch,polyvinyl alcohol and water-soluble polyester sizing,respectively,and tensile property of the sized roving was tested accordingly.The break force of the sized roving was considered as the adhesion force of the sizing to the fiber in the roving method.The experimental results show that the effects of sizing film strength and fiber strength on the adhesive force can be weakened when the concentration 0.5% of size paste is used,instead of 1% in the roving method.The size morphology in the sized roving and on the surface was observed through scanning electron microscopy,in the form of penetration and coverage of the sizing in or on the roving.On the other hand,the Young-Dupré equation was used to calculate the adhesion work.The advantages and disadvantages of roving method and the adhesion work method were compared.The adhesion obtained by both two methods reflects the rule of chemical similarity between warp sizing and fiber. 相似文献
99.
Jong-Min Park Mi Yeon Kim Joachim Jose Min Park 《International journal of molecular sciences》2022,23(1)
A regenerable immunoaffinity layer comprising covalently immobilized orientation-controlled antibodies was developed for use in a surface plasmon resonance (SPR) biosensor. For antibody orientation control, antibody-binding Z-domain-autodisplaying Escherichia coli (E. coli) cells and their outer membrane (OM) were utilized, and a disuccinimidyl crosslinker was employed for covalent antibody binding. To fabricate the regenerable immunoaffinity layer, capture antibodies were bound to autodisplayed Z-domains, and then treated with the crosslinker for chemical fixation to the Z-domains. Various crosslinkers, namely disuccinimidyl glutarate (DSG), disuccinimidyl suberate (DSS) and poly (ethylene glycol)-ylated bis (sulfosuccinimidyl)suberate (BS(PEG)5), were evaluated, and DSS at a concentration of 500 μM was confirmed to be optimal. The E. coli-cell-based regenerable HRP immunoassay was evaluated employing three sequential HRP treatment and regeneration steps. Then, the Oms of E. coli cells were isolated and layered on a microplate and regenerable OM-based HRP immunoassaying was evaluated. Five HRP immunoassays with four regeneration steps were found to be feasible. This regenerable, covalently immobilized, orientation-controlled OM-based immunoaffinity layer was applied to an SPR biosensor, which was capable of quantifying C-reactive protein (CRP). Five regeneration cycles were repeated using the demonstrated immunoaffinity layer with a signal difference of <10%. 相似文献
100.