全文获取类型
收费全文 | 9510篇 |
免费 | 693篇 |
国内免费 | 748篇 |
专业分类
电工技术 | 306篇 |
综合类 | 1894篇 |
化学工业 | 120篇 |
金属工艺 | 88篇 |
机械仪表 | 401篇 |
建筑科学 | 292篇 |
矿业工程 | 69篇 |
能源动力 | 23篇 |
轻工业 | 115篇 |
水利工程 | 52篇 |
石油天然气 | 49篇 |
武器工业 | 43篇 |
无线电 | 720篇 |
一般工业技术 | 279篇 |
冶金工业 | 659篇 |
原子能技术 | 15篇 |
自动化技术 | 5826篇 |
出版年
2024年 | 31篇 |
2023年 | 107篇 |
2022年 | 203篇 |
2021年 | 232篇 |
2020年 | 169篇 |
2019年 | 119篇 |
2018年 | 102篇 |
2017年 | 146篇 |
2016年 | 159篇 |
2015年 | 186篇 |
2014年 | 447篇 |
2013年 | 380篇 |
2012年 | 535篇 |
2011年 | 597篇 |
2010年 | 539篇 |
2009年 | 559篇 |
2008年 | 668篇 |
2007年 | 719篇 |
2006年 | 697篇 |
2005年 | 686篇 |
2004年 | 554篇 |
2003年 | 530篇 |
2002年 | 361篇 |
2001年 | 353篇 |
2000年 | 272篇 |
1999年 | 209篇 |
1998年 | 168篇 |
1997年 | 163篇 |
1996年 | 125篇 |
1995年 | 141篇 |
1994年 | 129篇 |
1993年 | 100篇 |
1992年 | 78篇 |
1991年 | 68篇 |
1990年 | 42篇 |
1989年 | 45篇 |
1988年 | 34篇 |
1987年 | 24篇 |
1986年 | 21篇 |
1985年 | 33篇 |
1984年 | 31篇 |
1983年 | 19篇 |
1982年 | 12篇 |
1981年 | 14篇 |
1980年 | 12篇 |
1979年 | 10篇 |
1978年 | 11篇 |
1977年 | 10篇 |
1975年 | 15篇 |
1974年 | 8篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
31.
彭娜 《湖南冶金职业技术学院学报》2004,(4)
从语音、语义、结构3个方面分析了英语谚语的语言修辞特点,在此基础上,提出了等值、直译、意译、直意结合等4种汉译方法。另外,还提及了引申、对衬、格言、借用等4种具体翻译技巧。 相似文献
32.
This paper reports how the study of formal logical reasoning provides insight into more everyday types of reasoning, such as that involved in language comprehension. Both of these types of cognition are thought to involve the use of mental models, and so it is reasonable to think that the cognitive operations needed for formal logical reasoning would be involved in everyday reasoning as well. We focused on three aspects of formal reasoning: (a) the integration of information into a common mental model, (b) the drawing of inferences, and (c) the coordination of alternative possibilities. We were able to show that the integration and inference components were related to narrative comprehension processes, but the coordination of alternative models was not. Thus, there is evidence for some overlap in the mental processes used in formal and everyday reasoning. This further justifies the study of formal logical reasoning as a window into certain types of everyday reasoning. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
33.
34.
本文介绍了汉英机器翻译系统中从中间媒介语言生成英语的生成系统的词汇结构和功能,描述了生成系统各个层次之间的转换原理。为了说明清楚,在叙述中注意了列举从中间媒介中间媒介语言到目标语句的生成实例。 相似文献
35.
Ellen Spolsky 《Computers and the Humanities》1993,27(5-6):323-329
Olsen is right to note what can be done with a good theory and the right machine. His particular theory, however, is not transferable to literary studies. If we need a new model, I would suggest that cognitive science can provide a few interesting ones. I have begun to do some work based on David Marr's VISION, in which he hypothesizes two levels of processing within the visual module. My speculation has been on the parallel existence of distinguishable levels of conceptual or language organization which would correspond to the viewer and object centered perspectives Marr describes for vision. I propose to explore the possibility that we may find here the model for the existence of stylistic individualism within overarching historical stylistic generalizations, and even more, that this may be what feminists are searching for when they try to resist being coopted by the masculine language of objectivity.
Ellen Spolsky teaches English literature and literary theory and is the Director of the Lechter Institute for Literary Research at Bar-Ilan University, Israel. Her latest book is Gaps in Nature: Literary Interpretation and the Modular Mind(SUNY Press, 1993). 相似文献
36.
Reviews the book, Human cognitive abilities: A survey of factor-analytic studies by J. B. Carroll (see record 1993-97611-000). Carroll divides his book into three parts. The first is a historical and conceptual review of psychometric theory. Carroll begins by clearly defining and differentiating key concepts such as ability, aptitude, achievement, latent trait, and intervening variable, although recognizing that in practice it is often difficult to make absolute distinctions. The second part, and the bulk of the book, is a detailed analysis and synthesis of a myriad of findings in the area of cognitive abilities. In the third part of his book, Carroll summarizes his undertaking and addresses traditional concerns and controversies. He compares and contrasts his model of cognitive abilities with that of others. Although Carroll's book does not and indeed cannot resolve the issues and controversies concerning the nature of human cognitive abilities, it does represent a notable contribution to our ongoing endeavours. It undoubtedly is a book that anyone interested in cognitive abilities would wish to explore because of its encyclopedic, in-depth coverage of the topic. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
37.
多功能滚齿机的数字控制系统 总被引:1,自引:1,他引:0
本文叙述了以STDPC/XT(或PC/AT)机为主要核心构成的滚齿机数字控制系统的结构,软件设计和特点,系统采用混合语言编程,极大地提高了软件设计的灵活性与快速性,也分析了CNC系统的加工过程,提出了加工中的软件预处理控制方法,并给出了轴伺服控制的并行算法分析与实现。 相似文献
38.
Memorializes John Bissell (Jack) Carroll, an early leader in the development of psycholinguistics and a dominant contributor to psychometrics and the study of individual differences in cognitive abilities. His seminal work in evaluating foreign language proficiencies across multiple cultures combined his expertise in psycholinguistics with that in psychometrics and defined fundamental issues in the study of language acquisition. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
39.
40.
Repeated reference creates strong expectations in addressees that a speaker will continue to use the same expression for the same object. The authors investigate the root reason for these expectations by comparing a cooperativeness-based account (Grice, 1975) with a simpler consistency-based account. In two eye-tracking experiments, the authors investigated the expectations underlying the effect of precedents on comprehension. The authors show that listeners expect speakers to be consistent in their use of expressions even when these expectations cannot be motivated by the assumption of cooperativeness. The authors conclude that though this phenomenon seems to be motivated by cooperativeness, listeners' expectation that speakers be consistent in their use of expressions is governed by a general expectation of consistency. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献