全文获取类型
收费全文 | 991篇 |
免费 | 9篇 |
国内免费 | 1篇 |
专业分类
电工技术 | 9篇 |
化学工业 | 235篇 |
金属工艺 | 54篇 |
机械仪表 | 15篇 |
建筑科学 | 9篇 |
矿业工程 | 9篇 |
能源动力 | 3篇 |
轻工业 | 14篇 |
水利工程 | 12篇 |
石油天然气 | 40篇 |
无线电 | 57篇 |
一般工业技术 | 249篇 |
冶金工业 | 220篇 |
原子能技术 | 33篇 |
自动化技术 | 42篇 |
出版年
2022年 | 16篇 |
2021年 | 16篇 |
2020年 | 19篇 |
2019年 | 18篇 |
2018年 | 24篇 |
2017年 | 29篇 |
2016年 | 21篇 |
2015年 | 13篇 |
2014年 | 26篇 |
2013年 | 25篇 |
2012年 | 20篇 |
2011年 | 33篇 |
2010年 | 24篇 |
2009年 | 29篇 |
2008年 | 27篇 |
2007年 | 25篇 |
2006年 | 21篇 |
2005年 | 19篇 |
2004年 | 14篇 |
2003年 | 21篇 |
2002年 | 25篇 |
2001年 | 22篇 |
2000年 | 15篇 |
1998年 | 39篇 |
1997年 | 24篇 |
1996年 | 16篇 |
1995年 | 13篇 |
1994年 | 12篇 |
1993年 | 18篇 |
1992年 | 24篇 |
1991年 | 14篇 |
1990年 | 14篇 |
1989年 | 19篇 |
1987年 | 11篇 |
1986年 | 22篇 |
1985年 | 10篇 |
1984年 | 15篇 |
1981年 | 11篇 |
1980年 | 16篇 |
1979年 | 17篇 |
1978年 | 13篇 |
1977年 | 22篇 |
1976年 | 16篇 |
1975年 | 16篇 |
1974年 | 13篇 |
1973年 | 11篇 |
1972年 | 14篇 |
1971年 | 11篇 |
1969年 | 10篇 |
1968年 | 12篇 |
排序方式: 共有1001条查询结果,搜索用时 15 毫秒
71.
72.
V. V. Shevchenko I. D. Nizkin A. V. Mal’kov E. V. Luk’yanova 《Russian Journal of Non-Ferrous Metals》2008,49(3):181-186
The effect of hydrogen on consolidation of granules of the VT5-1kt alloy, as well as the structure, mechanical characteristics, and fracture micromechanism of a compact produced by the hot-isostatic-pressing technique, is studied. It is established that hydrogen doping allows obtainment of a compact of the VT5-1kt alloy of 100% density with a high complex of properties in the course of a few minutes at such temperature-strength conditions in which the consolidation of granules is not realized. It is shown that the process of consolidation of hydrogenated granules proceeds more effectively in the (α + β) region. 相似文献
73.
L. I. Podzorova A. A. Il'icheva N. A. Mikhailina V. Ya. Shevchenko L. I. Shvorneva 《Inorganic Materials》2002,38(12):1235-1240
Data are presented on the phase composition of ZrO2–Al2O3–CeO2 powders containing 10, 30, and 70 mol %, prepared via coprecipitation and successive precipitation. The precipitation procedure is shown to have a strong effect on the phase composition of the heat-treated powders and the state (inter- or intracrystalline) of the T-ZrO2 phase, thereby changing its stability. At an Al2O3 content of 30 mol %, the M-ZrO2 content is independent of the precipitation procedure. 相似文献
74.
75.
76.
77.
S. S. Shevchenko 《Chemical and Petroleum Engineering》1989,25(3):118-121
Translated from Khimicheskoe i Neftyanoe Mashinostroenie, No. 3, pp. 9–10, March, 1989. 相似文献
78.
Iu A Grinevich I S Nikol'ski? V P Shevchenko O D Chernenko 《Eksperimental?nai?a onkologii?a》1986,8(2):35-8, 70
It is shown that prodigiosan is an inductor of synthesis of the substances with the thymosin-like activity. The suggestion about inhibition of 3-methylcholanthrene-induced blastomogenesis by prodigiosan which is mediated by the substances with the thymosin-like activity and interferon is discussed. We present the hypothetical diagram of the development of the above mentioned mechanism. The significance of the obtained findings for elaboration of the immunotherapy is discussed. 相似文献
79.
V. Ya. Shevchenko M. I. Samoilovich A. L. Talis A. E. Madison 《Glass Physics and Chemistry》2005,31(4):407-419
A general algorithm is proposed for constructing coherent boundaries. This algorithm is based on the interrelation between the spatial coherence of structural fragments in nanoparticles and the geometric connection in the corresponding associated bundle. A local approach is used to describe the structure of coherent boundaries in zirconia nanoparticles. The inference is made that the models of structures thus obtained should be preferred over the models constructed in terms of the theory of coincident site lattice.Original Russian Text Copyright © 2005 by Fizika i Khimiya Stekla, Shevchenko, Samoilovich, Talis, Madison. 相似文献
80.