全文获取类型
收费全文 | 383篇 |
免费 | 2篇 |
专业分类
电工技术 | 10篇 |
化学工业 | 96篇 |
金属工艺 | 14篇 |
机械仪表 | 9篇 |
矿业工程 | 5篇 |
轻工业 | 1篇 |
水利工程 | 12篇 |
石油天然气 | 43篇 |
无线电 | 8篇 |
一般工业技术 | 135篇 |
冶金工业 | 36篇 |
原子能技术 | 8篇 |
自动化技术 | 8篇 |
出版年
2022年 | 9篇 |
2019年 | 7篇 |
2018年 | 5篇 |
2017年 | 7篇 |
2016年 | 16篇 |
2015年 | 4篇 |
2014年 | 11篇 |
2013年 | 15篇 |
2012年 | 10篇 |
2011年 | 16篇 |
2010年 | 9篇 |
2009年 | 8篇 |
2008年 | 11篇 |
2007年 | 8篇 |
2006年 | 12篇 |
2005年 | 8篇 |
2004年 | 5篇 |
2003年 | 10篇 |
2002年 | 7篇 |
2001年 | 11篇 |
2000年 | 5篇 |
1998年 | 15篇 |
1997年 | 6篇 |
1996年 | 6篇 |
1995年 | 5篇 |
1992年 | 6篇 |
1991年 | 5篇 |
1990年 | 10篇 |
1989年 | 3篇 |
1988年 | 6篇 |
1987年 | 4篇 |
1986年 | 8篇 |
1985年 | 9篇 |
1984年 | 3篇 |
1983年 | 3篇 |
1982年 | 6篇 |
1981年 | 5篇 |
1979年 | 4篇 |
1978年 | 10篇 |
1977年 | 4篇 |
1976年 | 4篇 |
1975年 | 7篇 |
1974年 | 8篇 |
1973年 | 10篇 |
1972年 | 4篇 |
1971年 | 5篇 |
1970年 | 7篇 |
1967年 | 7篇 |
1966年 | 3篇 |
1965年 | 3篇 |
排序方式: 共有385条查询结果,搜索用时 32 毫秒
1.
G. A. Kolmakov V. F. Zanozina E. N. Karataev D. F. Grishin A. D. Zorin 《Petroleum Chemistry》2006,46(6):384-388
The feasibility of manufacture of asphaltic materials by means of the thermal cracking of acid tars was shown and a corresponding bench-scale unit was designed. The dependence of the viscosity characteristics of the obtained compositions on the temperature and time of the process was examined using the penetration technique. 相似文献
2.
I. A. Grishin V. A. Gur'ev E. B. Intyushin Yu. E. Elliev A. P. Savikin 《Inorganic Materials》2004,40(4):431-433
TeO2–WO3 glasses coactivated with Er3+ and Yb3+ are prepared. The effect of Yb content on the efficiency of Er photoluminescence (PL) in the visible and IR spectral regions is studied. The highest PL efficiency is achieved at an Er : Yb atomic ratio of 1 : 1. The PL lifetime for the Er3+
4
I
13/2 level is determined to be 7–9 ms. 相似文献
3.
Cross-linking additions of silicon carbide and waste material from ferroalloy production make it possible to increase the
heat-resistance index for mullite-containing refractories. For briquette specimens based on a charge containing aluminum powder
it reaches 45 thermal cycles (1300°C – water).
Translated from Novye Ogneupory, No. 11, pp. 44–46, November 2008. 相似文献
4.
Yu. A. Radin I. A. Grishin T. S. Kontorovich O. B. Panshina A. V. Chugin 《Power Technology and Engineering (formerly Hydrotechnical Construction)》2006,40(2):113-119
Problems arising with connecting the second exhaust-heat boiler to the first exhaust-heat boiler under load in the case of
flow circuits of combined-cycle plants of type PGU-450 are considered. Similar problems exist for two-boiler single-turbine
units of type PGU-325 and for two-boiler single-turbine units of traditional steampower plants with an output of 200–300 MW
upon connection of the second furnace of a two-furnace boiler to the operating first furnace. Analysis of the temperature-induced
stressed state and of the cyclic strength of thick-walled elements of the steam-water conduit of PGU-450 and of two-furnace
boilers of two-boiler single-turbine units with an output of 200–300 MW (the check valve, the inlet header of the water economizer)
is used for determining the steam temperature differences in the high-pressure conduits to the steam turbine and the order
of connection of the second exhaust-heat boiler to the operating fist one. Modes of enabling a two-boiler single-turbine unit
of a combined-cycle plant, which are most “rigid” from the standpoint of thermal strength, are determined.
__________
Translated from élektricheskie Stantsii, No. 2, February 2006, pp. 11–17. 相似文献
5.
6.
A. A. Andronov I. A. Grishin V. A. Gur’ev V. V. Orekhovskii A. P. Savikin 《Technical Physics Letters》1998,24(5):365-366
In fluorozirconate glasses the luminescence yield of Er
2
3+
ions on the 4
I
13/2–4
I
15/2 lasing transition was increased more than tenfold by additional doping with Yb3+ and Tb3+ ions.
Pis’ma Zh. Tekh. Fiz. 24, 81–85 (May 12, 1998) 相似文献
7.
1. | Adding vanadium and titanium to Fe–C–Mn–Cr-alloy leads to the formation of special cubic carbides and redistribution of chromium between the phase components: its content in the metal base increases. The distribution coefficient for chromium between special carbides and austenite decreases from 4.2–4.8 to 2.9–3.7. |
2. | Addition of vanadium and titanium promotes an increase in the electrode potential for alloy 300Kh27G11 from (–0.3) to (–0.2) V and a reduction in the corrosion rate in sea water from 0.052 to 0.040 and 0.032 mm/year respectively. |
3. | Alloys based on the system Fe–C–Mn–Cr containing vanadium and titanium are promising materials for preparing cast articles which exhibit high corrosion resistance in sea water. |
8.
9.
10.
Studying of cellular interaction of hairpin‐like peptide EcAMP1 from barnyard grass (Echinochloa crusgalli L.) seeds with plant pathogenic fungus Fusarium solani using microscopy techniques
下载免费PDF全文
![点击此处可从《Scanning》网站下载免费的PDF全文](/ch/ext_images/free.gif)