全文获取类型
收费全文 | 1416篇 |
免费 | 54篇 |
国内免费 | 25篇 |
专业分类
电工技术 | 19篇 |
技术理论 | 1篇 |
综合类 | 129篇 |
化学工业 | 131篇 |
金属工艺 | 28篇 |
机械仪表 | 51篇 |
建筑科学 | 228篇 |
矿业工程 | 25篇 |
能源动力 | 24篇 |
轻工业 | 68篇 |
水利工程 | 27篇 |
石油天然气 | 45篇 |
武器工业 | 1篇 |
无线电 | 112篇 |
一般工业技术 | 99篇 |
冶金工业 | 114篇 |
原子能技术 | 11篇 |
自动化技术 | 382篇 |
出版年
2024年 | 6篇 |
2023年 | 12篇 |
2022年 | 14篇 |
2021年 | 33篇 |
2020年 | 61篇 |
2019年 | 71篇 |
2018年 | 35篇 |
2017年 | 24篇 |
2016年 | 27篇 |
2015年 | 44篇 |
2014年 | 66篇 |
2013年 | 64篇 |
2012年 | 62篇 |
2011年 | 93篇 |
2010年 | 96篇 |
2009年 | 66篇 |
2008年 | 74篇 |
2007年 | 58篇 |
2006年 | 57篇 |
2005年 | 63篇 |
2004年 | 49篇 |
2003年 | 45篇 |
2002年 | 50篇 |
2001年 | 34篇 |
2000年 | 33篇 |
1999年 | 31篇 |
1998年 | 18篇 |
1997年 | 8篇 |
1996年 | 11篇 |
1995年 | 16篇 |
1994年 | 17篇 |
1993年 | 8篇 |
1992年 | 7篇 |
1991年 | 12篇 |
1990年 | 7篇 |
1989年 | 5篇 |
1987年 | 4篇 |
1986年 | 4篇 |
1985年 | 13篇 |
1984年 | 13篇 |
1983年 | 11篇 |
1981年 | 17篇 |
1980年 | 6篇 |
1977年 | 4篇 |
1975年 | 3篇 |
1969年 | 5篇 |
1968年 | 4篇 |
1965年 | 4篇 |
1963年 | 3篇 |
1954年 | 3篇 |
排序方式: 共有1495条查询结果,搜索用时 15 毫秒
1.
《Planning》2015,(3)
为了培养青年医师运用医学科普语言传播医学知识的能力,向社会提供更优质、可及的健康知识,改善医患关系,促进社会和谐;同时出于向社区、媒体推送一批优秀青年医学科普人才的考虑,本文在总结北京协和医院培养青年医务人员医学科普能力经验的基础上,尝试构建一套适合大型公立医院(尤其是教学医院)培养青年医务人员医学科普能力的新模式——“科普训练营”。本文旨在系统介绍该模式的产生背景、实践经验及初期效果,阐释实施后的重要意义,及实施过程中的挑战与应对策略。 相似文献
3.
艺术与科学的问题一直是设计界普遍关注的问题之一。技术与艺术的分离与结合,推动了设计的发展,但设计最终必将走向科学与艺术的结合之路。 相似文献
4.
No authorship indicated 《Canadian Metallurgical Quarterly》2003,58(8):554
Presents the 2003 American Psychological Foundation's Gold Medal Award for Life Achievement in the Science of Psychology, which was presented to Robert Rosenthal. A biography of Rosenthal is provided, along with a selected bibliography and the text of the award citation: "For outstanding scientific contributions that have had a profound influence on research methods, empirical investigations, theory, and applications. Robert Rosenthal's seminal research on interpersonal expectancy inspired hundreds of studies with applications within and beyond psychology. His amplification of experimenter- and subject-related artifacts and his insights about ethical issues have improved the way that research is conducted. His statistical contributions are classic and wide ranging, including his body of work on meta-analysis and contrast analysis and his formulation of valuable procedures, such as the binomial effect-size display and counternull statistics. An exceptional scientist, teacher, mentor, and author, Rosenthal, with his generous and brilliant touch, has shaped the lives and work of countless others." (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
5.
A. H. Johnstone 《Journal of Computer Assisted Learning》1991,7(2):75-83
Abstract The difficulties of learning science are related to the nature of science itself and to the methods by which science is customarily taught without regard to what is known about children's learning. An information processing model is proposed to guide thinking and research in this area. 相似文献
6.
Data-logging: effects on practical science 总被引:2,自引:0,他引:2
Abstract This paper describes an investigation into the processes and effects of using electronic data-logging in practical science. A pilot study of classical laboratory work in schools was compared with similar tasks performed with data-logging systems. A more detailed exploration of pupils' performance was then conducted through an extensive series of observations in a range of secondary schools. The results reinforce previous indications of the potential benefits of data-logging, but such benefits must be viewed in the curriculum context of the type of measurement activity and the pedagogical context of teaching and learning objectives. The paper concludes with a discussion of the latter issues. 相似文献
7.
无源微波遥感用于地震预报的实验研究 总被引:4,自引:1,他引:3
对无源微波遥感用于地震预报在理论研究的基础上对不同岩性不同结构的岩石试件进行了加载实验,测量了岩石试件的微波辐射随载荷的变化.实验得出:岩石试件的微波辐射能量随岩石应力状态变化而显著变化;而且,不同的波段变化的幅度不同;同一波段不同极化方式的波随应力变化的变化量也不同;微波辐射能量的变化能够被卫星微波遥感探测器探测到.实验还发现,岩石试件临破裂前出现明显的微波辐射异常. 相似文献
8.
John Pearson 《The Visual computer》1988,4(1):19-26
A discussion of the historical and aesthetic questions raised by the Fine Arts community regarding the uses of the computer by artists, its limitations and its potential. Creating a texture and context for this discussion necessitated the weaving into this discussion the role of technology, science, mathematics, the humanities, and aesthetics in the visual arts. 相似文献
9.
D. Twigger M. Byard S. Draper R. Driver R. Hartley S. Hennessy C. Mallen R. Mohamed‡ C. O'Malley§ T. O'Shea‡ E. Scanlon‡ 《Journal of Computer Assisted Learning》1991,7(2):144-155
Abstract This paper outlines the work of the Conceptual Change in Science project, funded as part of the ESRC InTER programme. The aims of this research project are to clarify and describe the process of change in learners' conceptual understandings of natural phenomena. The domain of reasoning selected for study is that of mechanics. Computer software which may be useful in exploring and developing pupils' reasoning and promoting conceptual change in this domain is being developed and evaluated. The group that is carrying out the research is based at the Universities of Leeds, Glasgow and the Open University. 相似文献
10.
No authorship indicated 《Canadian Metallurgical Quarterly》2007,61(4):345
Presents a collection of abstracts from the 2007 Canadian Society for Brain, Behaviour and Cognitive Science (CSBBCS) Annual Meeting. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献