全文获取类型
收费全文 | 640篇 |
免费 | 23篇 |
国内免费 | 22篇 |
专业分类
电工技术 | 26篇 |
综合类 | 157篇 |
化学工业 | 27篇 |
金属工艺 | 9篇 |
机械仪表 | 18篇 |
建筑科学 | 49篇 |
矿业工程 | 6篇 |
能源动力 | 10篇 |
轻工业 | 15篇 |
水利工程 | 13篇 |
石油天然气 | 24篇 |
武器工业 | 3篇 |
无线电 | 50篇 |
一般工业技术 | 76篇 |
冶金工业 | 38篇 |
原子能技术 | 31篇 |
自动化技术 | 133篇 |
出版年
2022年 | 6篇 |
2021年 | 10篇 |
2020年 | 14篇 |
2019年 | 12篇 |
2018年 | 6篇 |
2017年 | 16篇 |
2016年 | 14篇 |
2015年 | 16篇 |
2014年 | 25篇 |
2013年 | 20篇 |
2012年 | 27篇 |
2011年 | 31篇 |
2010年 | 29篇 |
2009年 | 37篇 |
2008年 | 29篇 |
2007年 | 37篇 |
2006年 | 45篇 |
2005年 | 32篇 |
2004年 | 28篇 |
2003年 | 79篇 |
2002年 | 18篇 |
2001年 | 25篇 |
2000年 | 17篇 |
1999年 | 26篇 |
1998年 | 9篇 |
1997年 | 9篇 |
1996年 | 7篇 |
1995年 | 10篇 |
1994年 | 2篇 |
1993年 | 7篇 |
1992年 | 5篇 |
1991年 | 2篇 |
1990年 | 8篇 |
1988年 | 1篇 |
1986年 | 2篇 |
1985年 | 1篇 |
1984年 | 1篇 |
1983年 | 2篇 |
1982年 | 1篇 |
1979年 | 1篇 |
1978年 | 1篇 |
1977年 | 2篇 |
1975年 | 2篇 |
1973年 | 3篇 |
1970年 | 1篇 |
1964年 | 1篇 |
1962年 | 1篇 |
1960年 | 1篇 |
1958年 | 1篇 |
1955年 | 2篇 |
排序方式: 共有685条查询结果,搜索用时 0 毫秒
61.
耿殿磊 《术语标准化与信息技术》2005,(4):15-20
本文围绕大学校名翻译中结构排列和语汇选择两个关键问题,对中国大学校名英译的基本方法和原则作了较全面的探讨,并呼吁高校和翻译工作者对大学校名的翻译应引起高度重视,以提高学校开展国际交流与合作的成效。 相似文献
62.
蔡子亮 《术语标准化与信息技术》2005,(2):31-32
英语科技术语翻译要做到翻译等值,译应尽量找到语义场完全对应的词。因此,在翻译时应抓住两个环节:一是细心理解原,把握术语在特定的上下关系中可能的含义;二是依靠专业知识,查阅相关专业词典。 相似文献
63.
无机非金属增强铸造金属复合材料常用术语分析 总被引:1,自引:0,他引:1
总结了用无机非金属材料增强金属材料液态成形中所遇到的常用概念、术语及定义,介绍了复合材料铸造中所用材料、工艺方法的基本分类。 相似文献
64.
Non-singular term effect on the fracture quantities of a crack in a piezoelectric medium 总被引:1,自引:0,他引:1
The static problem of a crack in a piezoelectric plate subjected to biaxial loading at infinity is analyzed. The aim of this paper is to estimate the influence of non-singular terms originated by the load biaxiality on the stress fields and on the elastic and electric displacements in the vicinity of the crack tip. An analytical method for seeking the electro-elastic solution is proposed. The novel procedure involves a transformation of similarity induced by the fundamental matrix that enables to express the equations governing the problem in terms of complex potentials. The application of the boundary conditions leads then to the formulation of Hilbert problems whose solutions allow to obtain the generalized stress and displacement components. Numerical results and graphs are presented and discussed for various loading conditions. The non-singular solution is compared to the asymptotic one, generally considered in the literature when analyzing fracture problems. In particular, it is shown that the direction of incipient crack extension, sought through the maximum circumferential stress criterion, can be seen to deviate from the crack axis as the collinear load increases, although geometry and applied load are symmetric. 相似文献
65.
Grounding spatial language in perception: An empirical and computational investigation. 总被引:1,自引:0,他引:1
The present paper grounds the linguistic categorization of space in aspects of visual perception; specifically, the structure of projective spatial terms such as above are grounded in the process of attention and in vector-sum coding of overall direction. This is formalized in the attentional vector-sum (AVS) model. This computational model accurately predicts linguistic acceptability judgments for spatial terms, under a variety of spatial configurations. In 7 experiments, the predictions of the AVS model are tested against those of 3 competing models. The results support the AVS model and disconfirm its competitors. The authors conclude that the structure of linguistic spatial categories can be partially explained in terms of independently motivated perceptual processes. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
66.
A new method is proposed for solving a three-dimensional problem of the elasticity theory for a layer in terms of displacements.
It is much easier to satisfy the boundary conditions within the framework of this approach than with the known methods. An
example brought to numerical results is considered.
__________
Translated from Problemy Prochnosti, No. 3, pp. 38–46, May–June, 2008. 相似文献
67.
John P. Borg Dennis Grady John R. Cogar 《International Journal of Impact Engineering》2001,26(1-10):65-76
This analysis pursues the underlying physics governing the expansion, dispersal and breakup of a thin walled steel right circular cylinder filled with liquid after being impacted by a high velocity aluminum sphere. The impact generates a radially expanding coherent thin shell of liquid which stays together to at least a diameter 8 times that of the original cylinder. An instability criterion is proposed and developed based on the opposing forces of stabilizing inertial pressures and destabilizing viscous resistance. This criterion is compared to test data where possible in order to ascertain its ability to predict liquid breakup of the shell. The breakup theory developed here predicts the extensive expansion of the unthickened liquid prior to fragmentation as observed in the experiments. This result lends some credence to the underlying physics pursued here and its ability to predict the onset of liquid fragmentation. 相似文献
68.
以231省道兴化—泰州段车路河特大桥主桥工程为例,介绍了该工程上部结构的主要施工方法,并详细阐述了支架、拱肋、系梁、吊杆及风撑等环节的施工方法,提出了设计及施工时应注意的事项,为类似工程积累了经验。 相似文献
69.
70.
通过对国外大型纸业公司的生产、营销、管理等方面的分析,探讨了我国纸业公司与国外大企业的差距及今后的发展对策。 相似文献