首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   5500篇
  免费   304篇
  国内免费   232篇
电工技术   341篇
综合类   886篇
化学工业   111篇
金属工艺   37篇
机械仪表   87篇
建筑科学   1371篇
矿业工程   94篇
能源动力   59篇
轻工业   57篇
水利工程   279篇
石油天然气   86篇
武器工业   9篇
无线电   97篇
一般工业技术   300篇
冶金工业   1622篇
原子能技术   8篇
自动化技术   592篇
  2024年   19篇
  2023年   56篇
  2022年   102篇
  2021年   126篇
  2020年   146篇
  2019年   98篇
  2018年   59篇
  2017年   64篇
  2016年   105篇
  2015年   111篇
  2014年   274篇
  2013年   193篇
  2012年   282篇
  2011年   402篇
  2010年   372篇
  2009年   372篇
  2008年   378篇
  2007年   467篇
  2006年   371篇
  2005年   307篇
  2004年   302篇
  2003年   306篇
  2002年   218篇
  2001年   152篇
  2000年   82篇
  1999年   57篇
  1998年   34篇
  1997年   32篇
  1996年   23篇
  1995年   18篇
  1994年   17篇
  1989年   12篇
  1988年   12篇
  1987年   17篇
  1984年   11篇
  1971年   13篇
  1970年   13篇
  1966年   14篇
  1965年   49篇
  1964年   26篇
  1963年   14篇
  1962年   23篇
  1961年   20篇
  1960年   15篇
  1959年   24篇
  1958年   17篇
  1957年   23篇
  1956年   18篇
  1955年   24篇
  1954年   23篇
排序方式: 共有6036条查询结果,搜索用时 15 毫秒
21.
The present study examined whether siblings experience marital conflict differently and whether such differences, if present, were associated with differences in their adjustment. Self-report data about marital conflict, children's depressed mood, behavioral conduct, and externalizing problems were obtained from 122 sibling pairs (mean ages = 10 and 12 years) and their parents. Results indicated that siblings were significantly different in exposure to and appraisals of marital conflict. Differences in siblings' exposure to marital conflict were significantly correlated with differences in their depressed mood, behavioral conduct, and externalizing problems. Differences in siblings' feelings of self-blame for marital conflict were significantly correlated with differences in their depressed mood and behavioral conduct. Children who experienced more marital conflict than their siblings had more adjustment problems than their siblings. These results highlight the importance of studying siblings' unique experiences of marital conflict to better understand its impact on children's adjustment. (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   
22.
谢戈  张碧平  王红 《中国锰业》2003,21(1):51-54
阐述了全员劳动合同制的概念和实行全员劳动合同制的优越性,分析了我国实行全员劳动合同制改革实践中存在的问题,提出了在我国建立有中国特色的全员劳动合同制的对策。  相似文献   
23.
A picture-word version of the Stroop task was used to test the automatic activation of psychological distance by words carrying various senses of psychological distance: temporal (tomorrow, in a year), social (friend, enemy), and hypotheticality (sure, maybe). The pictures implied depth, with the words appearing relatively close to or distant from the observer. The participants classified the spatial distance of words faster when the word's implicit psychological distance matched its spatial distance (e.g., a geographically close word was classified faster when it was "friend" than when it was "enemy"). The findings are consistent with the idea that psychological distance is accessed automatically, even when it is not directly related to people's current goals, and suggest that psychological distance is an important dimension of meaning, common to spatial distance, temporal distance, social distance, and hypotheticality. (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   
24.
State psychological associations can respond to supply and demand problems for postdoctoral residencies and internships by creating statewide training programs. A state psychological association training model is presented. The Arizona Psychological Association (AzPA) created a nonprofit subsidiary corporation- the Arizona Psychology Training Consortium-to increase the number of high-quality training opportunities in Arizona. The structure and operation of the program are described. The training model emphasizes cultural diversity, psychotherapy, and independent practice. Members of the practice community in Arizona serve as supervisors, trainers, and mentors. From 2001 through 2006, 19 postdoctoral residents and 51 interns completed the program. AzPA has benefited from increased student involvement. Many residents and interns later became association members. Arizona can serve as a model for other states that wish to help their professionals in training. (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   
25.
武钢6#高炉煤气洗涤水处理新思路   总被引:1,自引:0,他引:1  
武钢6#高炉煤气洗涤水在已有的经验基础上,引进了项目总承包方式的运作。总结了药剂选择、使用量的确定、工业性试验的效果、半年多来的实际运行成果,为外协技术项目今后采用总承包方式的运作提供了初步的经验。  相似文献   
26.
Comments on the original article, The dismantling of our health system: Strategies for the survival of psychological practice by Nicholas A. Cummings (see record 1986-22651-001). In response to this article, the current author says "no, no, no!" He believes that "survival with this degree of compromise amounts to doing anything for a buck." (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   
27.
高摩赞工程项目是水电集团公司在巴基斯坦承建的第一个综合性的水利水电枢纽工程,也是第一个EPC合同形式的项目。本文主要介绍了项目危机处理及合同谈判的过程和措施,通过长达一年的艰苦谈判,化解了项目危机,增进了中巴传统友谊,实现了良好的经济效益和社会效益,为中国水电集团公司国际化战略发展提供了可借鉴的成功案例。  相似文献   
28.
现代生活中计算机网络已经越来越普及,在人们享受网络科技带来的快捷方便的同时,网络犯罪也悄悄潜入了人们的生活,黑客病毒、网络诈骗以及色情暴力信息随着网络如潮水般涌来,对网络犯罪进行防控已经刻不容缓。本文简要介绍了目前网络犯罪的特点,然后从心理学的角度分析了网络犯罪形成的原因,最后针对网络犯罪心理的成因,从政府部门的角度提出了一些预防措施。  相似文献   
29.
In response to K. Danzinger's (see record 1986-00068-001) suggestion that the first use of the term subject in the English-language psychological literature occurred in 1886 in the context of experiments involving the hypnotic state, the present author points out that there are examples of the use of the term in discussions of experiments on thought transference published by the Society for Psychical Research in the 1880's. (8 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   
30.
作为《建设工程施工合同》订立的核心内容,如果合同造价确定得合理,就会对施工过程中的变更以及工程竣工后的结算提供便利。在目前以发包商(项目开发商)占主导地位的建筑领域,对如何才能找到一条相对合理的方法来确定最终的合同总造价,哪种造价才是相对公平、合理而又不失灵活性等内容进行了探讨。  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号