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1.
阐述了赛络纺纱技术的原理,探讨了F1510细纱机改造赛络纺的方法,优选了工艺参数.试验结果表明,在相同的配棉条件下,CJ18.2tex赛络纱的条干、粗细节、强力和毛羽均优于相同线密度的传统环锭纱. 相似文献
2.
采用爆炸法合成了纳米碳集聚体和纳米金刚石,将其低填充聚丙烯(PP)制备了复合材料,研究了复合材料的结晶行为和力学性能。结果表明:填充纳米粒子提高了PP的α晶态的结晶度,添加0.06%纳米碳集聚体或纳米金刚石的PP的结晶度分别提高了16.74%和25.83%;PP复合材料的拉伸强度随纳米粒子用量的增加而提高,但冲击强度下降。 相似文献
3.
Diversity in Addressing Reaction Mechanisms of Nano‐Thermite Composites with a Layer by Layer Structure 下载免费PDF全文
4.
An efficient table lookup decoding algorithm (TLDA) is presented to decode up to five possible errors in a binary systematic (47, 24, 11) quadratic residue (QR) code. The main idea of the TLDA is based on the weight of syndrome, the syndrome decoder together with a reduced-size lookup table (RSLT), and the shift-search method given by Reed et al. Thus, the size of the lookup table and computational complexity in a finite field can be significantly reduced. The memory size of the proposed condensed lookup table (CLT) consists of only 36.6 Kbytes and is only about 0.24% of the full lookup table (FLT) and 3.2% of the lookup up table given by Chen et al., respectively. These facts lead to significant reduction of computational time and the decoding complexity. A simulation result shows that the decoding speed of the proposed TLDA is much faster than all existing decoding algorithms. Moreover, it can be extended to decode all QR codes, including the class of the cyclic codes when the code length is moderate. The CLT makes this new decoding algorithm suitable for hardware or firmware implementations. 相似文献
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采用离散小波变换与快速傅立叶变换相结合的方法,先对纱线信号进行小波分解,再对各子带信号作快速傅立叶变换,从而得到各子带信号的频谱。截取相应频段,并在同一图形上显示,然后将各频率成分转换成相应的各波长分量,得到纱线波谱图。 相似文献
7.
简介了6000m^3/h空分设备配套的H820.6.1/0.85型离心式空压机轴承结构、润滑系统和运行参数,介绍了轴瓦振裂的现象,并分析了原因,阐述了采取的处理措施、效果以及从中得到的教训。 相似文献
8.
Chiung-Wen Hsu Ya-Chieh Li Chen-Yeon Chu Chun-Min Liu Shu-Yii Wu 《International Journal of Hydrogen Energy》2014
The excessive burning of fossil fuels is one of the main sources of emissions of carbon dioxide (CO2) which causes the greenhouse effect. The effect could be resulted in climate changes and disorder of our ecosystem. Thus, bioenergy developments will play important roles to help decreasing CO2 emission for better global environment in the future. In the domain of biohydrogen production, biomass including: cellulose, wastewater and agricultural waste are the main resources to maintain feedstock demand. Developing sustainable energy with sustainable feedstock sources like sugary wastewater by using two-stage biomass-derived gas production system might bring great economic profits to business. In this study, the system will be chosen to testify its sustainability when producing the sugary wastewater to renewable source energy. The commercial potential analysis is derived from the internal rate of return (IRR). The novelty finding of this study, as the result showed, found out that the energy recovery is 1.12 times higher than single stage. According to the IRR analysis with the calculated years of 15 years, the IRR is 32.47% that means the system can payback within 3.19 years. Therefore, the feasibility of commercialization potential of biomass-derived gas production system can be verified. 相似文献
9.
Fulvio Frisone 《能源与动力工程:英文版》2014,(1):27-36
During the past 15 years, disputable experimental evidence has built up for LERN (low energy nuclear reaction) phenomena in specialized heavy hydrogen systems. Actually, it can not be said that a new branch of science is beginning. In spite of experimental contributions, the real problem is that the theoretical statements of LERN are unknown. In this work, the authors analyze the deuteron-deuteron reactions within palladium lattice by means of the coherence theory of nuclear and condensed matter and, using this general theoretical framework accepted from "cold fusion scientists", it will be shown the low occurrence probability of fusion phenomena. In fact, in the coherence approach, the D-D potential exhibits double barrier features and, in this way, the D-D fusion is hampered. 相似文献
10.
The yarn pullout test is a prevailing and particular method to evaluate the effects of yarn properties and the structural characteristics of the fabric on the fabric mechanical performance. In this research, a theoretical model of yarn pull out is presented to determine the reserved energy of weft-knitted fabrics with rib 1 × 1 structure. This model is based on the fabric dimensional properties, i.e. stitch length, wale density, yarn diameter and contact angle of yarns. In order to appraise the proposed model, five different double jersey weft-knitted fabrics with rib 1 × 1 structure were produced and exposed to pullout test. Comparison between deviations of theoretical results from experimental results demonstrates that the presented theoretical model exhibits a rational estimation of the reserved energy in these fabrics. 相似文献