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211.
Improved Filtration Performance of Continuous Alumina-fiber-reinforced Mullite Composites for Hot-Gas Cleaning 总被引:1,自引:0,他引:1
Satoshi Kitaoka Naoki Kawashima Yoshinobu Komatsubara Akira Yamaguchi Hisao Suzuki 《Journal of the American Ceramic Society》2005,88(1):45-50
The effect of filtration layer morphology on filtration performance at 673 K was investigated for continuous alumina-fiber-reinforced mullite composite filters that capture fly ash on their outer surfaces. Two types of filtration layers were prepared on the outer surfaces: a mono-layer consisting of mullite agglomerated particulates and a bi-layer, with mullite whiskers formed by a vapor-phase reaction and strongly adhered to the particulates exposed on the outer surfaces. For filters with mono-filtration layers, the filtration efficiency was improved slightly by increasing the filtration layer thickness. However, the maximum differential pressure increased during the filtration tests. Adhesion of whiskers to the outer surface decreased the maximum differential pressure to about one-third less than that with the mono-filtration layer. This low differential pressure remained constant throughout the duration of the test, with corresponding increases in filtration efficiency. 相似文献
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213.
Hirofumi Kakemoto Tohru Higuchi Hajime Shibata Satoshi Wada Takaaki Tsurumi 《Journal of Materials Science: Materials in Electronics》2008,19(4):311-314
The modification of thermoelectric figure of merit was estimated from enhanced mobility of [100] oriented beta-FeSi2 film. beta-FeSi2 on Si(001) substrate was prepared by molecular beam epitaxy method using an Fe source. The crystallographic orientation of
beta-FeSi2 film on Si(001) substrate was characterized by using X-ray diffraction. Using scanning electron microscopy, surface morphology
and film thickness of samples were observed and estimated, respectively. The mobility of beta-FeS2 film on Si(001) substrate were also characterized by Hall measurement at room temperature. A part of the enhancement of figure
of merit was evaluated as the functions of mobility and crystallographic orientation of samples. 相似文献
214.
This paper describes a fundamental study on a pneumatic particle trap with a vibrator matrix. The particle trap device consisted
of pneumatic vibrators and a trap chamber used to trap a particle. The entire structure was fabricated from polydimethylsiloxane
(PDMS). The particle in the trap chamber was manipulated and trapped in the equilibrium region by exploiting the geometrical
symmetry of the vibrators. The x-axial velocity of the viscous fluid induced by the deformation of the flexible diaphragms was eliminated or minimized at
the center of two vibrators. Therefore, a particle could be trapped in the central capturing region by two or four vibrators.
The trapping of static and dynamic single particles was observed to verify the proposed operational method. 相似文献
215.
Makoto Wakabayashi Takayuki Kohno Tokutaro Kimura Satoshi Tamura Masahiko Endoh Satoru Ohnishi Toshikatsu Nishioka Yoshikatsu Tanaka Toshitaka Kanai 《应用聚合物科学杂志》2007,106(2):1398-1404
Many additives are commercially used to add more favorable qualities to films. The bleeding process by which the additive in a film comes to the surface is considered. A new bleeding model of additives in a polypropylene film under atmospheric pressure was investigated. Solubility and diffusion are found to be important for explaining this bleeding process. It was found that the experimental results were explained more precisely by assuming a two‐step transport process between the crystalline regions and the amorphous ones. The solubilities and diffusion coefficients of UV‐stabilizers such as 2‐(2H‐benzotriazol‐2‐yl)‐4‐(1,1,3,3‐tetramethylbutyl)phenol and 2‐(2H‐benzotriazol‐2‐yl)‐4‐methylphenol were determined at 40°C. The difference between the saturation solubilities and the diffusion coefficients of UV‐stabilizers was discussed by comparing with the results of molecular dynamics (MD) simulation. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2007 相似文献
216.
Satoshi Yoshida Jun Matsuoka Naohiro Soga 《Journal of the American Ceramic Society》1999,82(6):1621-1623
Subcritical crack growth in glass shows three characteristic regions, depending on crack velocity. Among three regions, in region III, where water does not affect crack-growth behavior, the slope of the crack-growth curve can be correlated with the intrinsic nature of glass fracture. In this study, to measure the crack velocity in region III, a periodic stress wave was applied to produce fracture-surface markings in the double-cleavage-drilled compression specimen. The crack-growth data obtained were compared with results obtained via direct observation of the crack front. As a result, this method, by using stress-wave fractography, was found to be effective to obtain the crack-growth curve in region III. 相似文献
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220.
Hidetaka Kawakita Hiroyasu Masunaga Kanako Nomura Kazuya Uezu Isamu Akiba Satoshi Tsuneda 《Journal of Porous Materials》2007,14(4):387-391
Protein adsorption was performed by a polymer brush prepared by atom-transfer radical polymerization (ATRP) to a porous inorganic
membrane. The porous inorganic membrane, Shirasu Porous Glass made from silica, was modified with a halogen-containing compound
to bind the active species for the polymerization. Glycidyl methacrylate was polymerized from the halogen compound by ATRP
for a prescribed time, and subsequently chemically modified. The progression of the chemical modification allowed the membrane
to lower the phosphate-buffer flux of the porous membrane due to the attachment of the polymer brush. Bovine serum albumin
(BSA), as a model protein, was adsorbed at 12 mg per gram of the membrane in permeating BSA solution through the polymer-brush-attached
porous membrane. 相似文献