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21.
满意度研究成为目前质量领域和经济领域一个非常热门和前沿的话题,但时常发现一些研究采用的满意度提升策略分析方法过于简单,甚至出现指标重要性和影响力概念混淆的现象.指标细分是正确研究企业满意度提升策略的前提条件,而重要性&影响力两维矩阵分析和奖惩分析是实现指标细分的有效方法. 相似文献
22.
通过分析山西省电力发展状况、存在的主要问题,面临的困难以及优势条件,以<山西省电力产业调整和振兴规划>为指导思想,针对全省电力实际,提出了进一步优化电源布局、继续加强电力项目核准、积极稳妥推进电价改革、加大电力建设及技术改造投入、完善小火电机组退出机制、严格电源项目市场准入、制定合理的财政配套政策等保障措施. 相似文献
23.
In this paper, we study the energy decay characteristics of the nozzle at supersonic velocity. We have taken three types of configuration: circular, square and elliptical. The results are compared to the circular exit design. The experimental data are compared in relation to the pressure ratio. The throat area assumed to be constant. The supersonic potential core length of the different orientations is calculated. From the results, we have found that the exit geometry plays an important role in mixing promotion. The core length of a non-circular jet is less intense than a circular jet. The core length of the nozzle is the same in both under and overexpanded case. In addition to that, there is no sign of axis switching due to weak shock. The results are obtained in two different categories, total pressure data and numerical simulation. An empirical relation is used to investigate the core length experimentally. 相似文献
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本文主要以深圳市景初家具设计公司与香港华伟家具公司合作开发推广的“写意东方”品牌为例,对家具品牌策划、设计与推广新模式的各个环节进行详细分析,希望能对家具企业的品牌建设提供一条行之有效的新的品牌发展模式。 相似文献
28.
We have studied the rate of methanol formation over Cu(100) and Ni/Cu(100) from various mixtures of CO, CO2 and H2. It is found that the presence of submonolayer quantities of Ni leads to a strong increase in the rate of methanol formation
from mixtures containing all three components whereas Ni does not influence the rate from mixtures of CO2/H2 and CO/H2, respectively. The influence of the partial pressures of CO and CO2 on the rate indicates that the role of CO is strictly promoting. From temperature-programmed desorption spectra it follows
that the surface concentration of Ni depends strongly on the partial pressure of CO. In this way the increase in reactivity
is interpreted as a CO-induced structural promotion introduced by the stronger bonding of CO to Ni as compared to Cu. It is
suggested that this type of promotional behavior will be of general importance in existent catalysts and perhaps even more
relevant in the development of new or improved bimetallic catalysts.
This revised version was published online in July 2006 with corrections to the Cover Date. 相似文献
29.
Gustavo Larsen Edgar Lotero Rubn D. Parra Lucía M. Petkovic Hugo S. Silva Srinivasanallur Raghavan 《Applied Catalysis A: General》1995,130(2):213-226
Palladium supported on sulfated zirconia (PdSZ) has been characterized by the n-butane isomerization reaction in the presence of hydrogen, X-ray absorption spectroscopy (XAS) and diffuse reflectance Fourier transform infrared spectroscopy (DRIFTS) of adsorbed carbon monoxide. Catalyst calcination at 873 K followed by hydrogen reduction at 513 K results in the formation of 30–40 Å Pd metal clusters, but the surface can only weakly adsorb CO, though stronger than Pd-free, sulfated zirconia catalysts. In the presence of hydrogen, PdSZ has a lower n-butane isomerization activity than SZ, and the Pd function cannot stabilize the reaction at low H2/n-butane ratios. 相似文献
30.
The electrochemical promotion of catalysis (EPOC) was used to promote the selective reduction of NO by hydrocarbons in presence of oxygen using thin (40 nm) porous Rh and Pt catalyst layers sputtered on the opposite surfaces of thin (0.25 mm) solid electrolyte (YSZ) plates serving as electrocatalytic elements of a monolithic electrochemically promoted reactor (MEPR). Using 22 Rh/YSZ/Pt type cells it was found that the reduction of NO in presence of 1.1 kPa O2 and 0.36 kPa C2H4 can be efficiently electropromoted with 340% rate enhancement, reaching 95% NO conversion with 100% selectivity to N2 in the temperature range from 280 to 340 °C. The apparent Faradaic efficiency is larger than unity for both the NO reduction and the C2H4 oxidation reaction.At elevated temperatures (≥300 °C) and high reactant conversions it was found that after current interruption, the catalytic rates do not return to their initial values but remain in a new highly active steady state. It appears that this highly active state is not a genuine intrinsic permanent NEMCA state but is manifestation of steady-state multiplicity in the monolithic reactor resulting from near complete gaseous O2 consumption. Thus the low and high activity steady states corresponding to zero applied potential appear to correspond to high and low average PO2 in the reactor. The latter is the result of the near complete reactant conversion under the preceding electropromoted operation. These highly active permanent NEMCA states may be quite useful for practical applications. 相似文献