全文获取类型
收费全文 | 22110篇 |
免费 | 1000篇 |
国内免费 | 972篇 |
专业分类
电工技术 | 512篇 |
技术理论 | 19篇 |
综合类 | 3540篇 |
化学工业 | 3384篇 |
金属工艺 | 518篇 |
机械仪表 | 648篇 |
建筑科学 | 3771篇 |
矿业工程 | 1257篇 |
能源动力 | 569篇 |
轻工业 | 2723篇 |
水利工程 | 226篇 |
石油天然气 | 569篇 |
武器工业 | 21篇 |
无线电 | 693篇 |
一般工业技术 | 1970篇 |
冶金工业 | 2202篇 |
原子能技术 | 36篇 |
自动化技术 | 1424篇 |
出版年
2024年 | 129篇 |
2023年 | 288篇 |
2022年 | 481篇 |
2021年 | 542篇 |
2020年 | 663篇 |
2019年 | 404篇 |
2018年 | 352篇 |
2017年 | 400篇 |
2016年 | 534篇 |
2015年 | 528篇 |
2014年 | 1441篇 |
2013年 | 1232篇 |
2012年 | 1505篇 |
2011年 | 1545篇 |
2010年 | 1472篇 |
2009年 | 1315篇 |
2008年 | 1080篇 |
2007年 | 1506篇 |
2006年 | 1550篇 |
2005年 | 1300篇 |
2004年 | 1092篇 |
2003年 | 989篇 |
2002年 | 860篇 |
2001年 | 692篇 |
2000年 | 535篇 |
1999年 | 373篇 |
1998年 | 286篇 |
1997年 | 208篇 |
1996年 | 152篇 |
1995年 | 135篇 |
1994年 | 83篇 |
1993年 | 79篇 |
1992年 | 52篇 |
1991年 | 38篇 |
1990年 | 31篇 |
1989年 | 17篇 |
1988年 | 13篇 |
1987年 | 12篇 |
1986年 | 19篇 |
1985年 | 16篇 |
1984年 | 18篇 |
1983年 | 25篇 |
1982年 | 8篇 |
1981年 | 8篇 |
1979年 | 5篇 |
1978年 | 8篇 |
1977年 | 6篇 |
1957年 | 7篇 |
1956年 | 4篇 |
1955年 | 8篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
11.
今年上半年我国石油工业基本保持平稳、健康的发展格局:油气产量和消费需求均持续增长,油气开采业大幅盈利,原油加工业仍然亏损,投资大幅度增长,原油进口依存度加大。下半年需要采取的应对措施是:进一步完善成品油价格形成机制;规范和引导上海石油交易所健康运行;加强天然气管理,作好需求预测;实施石油替代激励政策。预计下半年国际油价继续走高的可能性较大;我国全年石油表观消费可能会突破3亿吨,进口依存度继续在40%以上。 相似文献
12.
柏玉明 《湖南冶金职业技术学院学报》2003,(2)
信息技术是一种新型技术。信息技术和制造业相互依存、相互促进是一种发展趋势。信息技术对制造业的影响主要有:信息化在制造业的产品开发设计技术方面带来的进步,这主要包括计算机辅助技术;信息化在制造业的生产管理技术方面带来的进步,主要包括企业制造资源计划系统及产品数据管理;信息化在制造业的制造方式上带来的进步,主要包括柔性制造、计算机集成制造等先进制造技术。 相似文献
13.
14.
van Baaren Rick B.; Maddux William W.; Chartrand Tanya L.; de Bouter Cris; van Knippenberg Ad 《Canadian Metallurgical Quarterly》2003,84(5):1093
The present studies demonstrated the moderation of self-construal orientation on mimicry. Recent research has indicated that an interdependent self-construal is associated with assimilation of the other to the self whereas an independent self-construal is associated with minimizing the influence of others on the self (H. R. Markus & S. Kitayama, 1991; D. Stapel & W. Koomen, 2001). Therefore, the authors hypothesized that an interdependent self-construal would be associated with more mimicry than an independent self-construal. When self-construal orientations were experimentally primed. as in Studies 1 and 2, independent self-construals produced less nonconscious mimicry than interdependent self-construals. When self-construals were examined as cultural differences with either a chronically dominant independent (Americans) or interdependent (Japanese) construal of the self, these results were replicated. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
15.
William F. Maloney 《Canadian Metallurgical Quarterly》2003,129(2):165-172
The satisfaction that a customer has with the construction product and construction services provided by a contractor has a direct influence on the customer’s willingness to select that contractor for future work. Labor and management working together have the opportunity to influence customer satisfaction. Activities at the contractor/craft worker level, the contractor/local union level, and the contractor association/local union level have the greatest potential to influence customer satisfaction. A precisely defined plan incorporating labor-management activities targeted at specific satisfaction factors will have the greatest likelihood of creating high customer satisfaction. 相似文献
16.
NetLinx技术的发展,使得跟踪系统发生了划时代的飞跃,在制造业上的应用更加广泛。本文以一间显像管厂为例,详细介绍了跟踪系统在制造业上的应用。 相似文献
17.
Comments on the article "A house divided? The psychology of red and blue America" by D. C. Seyle and M. L. Newman (see record 2006-11202-001). Seyle and Newman concluded that the red and blue metaphor is inaccurate and proposed a purple America strategy to better convey that the majority of people do not align themselves with political extremes. There is interdisciplinary agreement on this. Although not cited by Seyle and Newman, the findings by Professor Fiorina of Stanford University were reported by the APA Monitor on Psychology in its coverage of the 2005 APA State Leadership Conference (Murray Law, 2005). In contrast to their social psychological analysis, Seyle and Newman were incorrect in concluding that "[a]s psychologists, we are not in a position to change either the elements of the American political system that may spur this conflict or even the decisions made by pundits, politicians, and reporters about the terms they choose to use in political discussion" (p. 579). (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
18.
Learning Organizations in Construction 总被引:1,自引:0,他引:1
The transformation of organizations from production-oriented entities to proactive learning entities that continuously leverage the knowledge of the workforce is a primary objective of management researchers. This focus has significant relevance to the construction industry where production-related research has predominantly overshadowed organizational development research. As one effort to change this emphasis, the writers present a research effort designed to study current organization learning techniques and technologies fielded by organizations both inside and outside of the construction industry. Through a series of exploratory case studies, the writers developed a maturity model together with the Construction Industry Institute that provides construction organizations with a framework for developing a learning organization culture. The maturity model focuses on learning organization characteristics of leadership, processes and infrastructure, communication/collaboration, education, and culture at the organization, community, and individual levels. This paper introduces the results of that effort including a presentation of the learning organization maturity model, framework application, and the overall characteristics of a learning organization. 相似文献
19.
20.
The authors highlight several possible ways in which the construction industry could lower present emissions of the greenhouse gas, carbon dioxide. It is an excellent discussion document and is recommended reading. 相似文献