全文获取类型
收费全文 | 4737篇 |
免费 | 256篇 |
国内免费 | 88篇 |
专业分类
电工技术 | 61篇 |
技术理论 | 1篇 |
综合类 | 999篇 |
化学工业 | 441篇 |
金属工艺 | 63篇 |
机械仪表 | 90篇 |
建筑科学 | 636篇 |
矿业工程 | 72篇 |
能源动力 | 42篇 |
轻工业 | 694篇 |
水利工程 | 168篇 |
石油天然气 | 50篇 |
武器工业 | 1篇 |
无线电 | 159篇 |
一般工业技术 | 154篇 |
冶金工业 | 934篇 |
原子能技术 | 14篇 |
自动化技术 | 502篇 |
出版年
2024年 | 19篇 |
2023年 | 50篇 |
2022年 | 106篇 |
2021年 | 119篇 |
2020年 | 140篇 |
2019年 | 101篇 |
2018年 | 104篇 |
2017年 | 116篇 |
2016年 | 145篇 |
2015年 | 167篇 |
2014年 | 352篇 |
2013年 | 282篇 |
2012年 | 335篇 |
2011年 | 395篇 |
2010年 | 336篇 |
2009年 | 330篇 |
2008年 | 221篇 |
2007年 | 233篇 |
2006年 | 219篇 |
2005年 | 181篇 |
2004年 | 189篇 |
2003年 | 188篇 |
2002年 | 115篇 |
2001年 | 77篇 |
2000年 | 46篇 |
1999年 | 41篇 |
1998年 | 35篇 |
1997年 | 13篇 |
1996年 | 17篇 |
1995年 | 11篇 |
1994年 | 13篇 |
1993年 | 15篇 |
1992年 | 12篇 |
1989年 | 16篇 |
1988年 | 25篇 |
1987年 | 20篇 |
1986年 | 14篇 |
1982年 | 15篇 |
1981年 | 19篇 |
1979年 | 13篇 |
1974年 | 12篇 |
1964年 | 20篇 |
1963年 | 11篇 |
1961年 | 11篇 |
1960年 | 10篇 |
1959年 | 12篇 |
1957年 | 14篇 |
1956年 | 14篇 |
1955年 | 21篇 |
1954年 | 17篇 |
排序方式: 共有5081条查询结果,搜索用时 537 毫秒
1.
2.
苏州平江市民文化活动中心是一个以会议、报告和放映电影为主,兼有文艺表演的多功能剧场.声学设计既要考虑到会议、报告所需要的语言清晰度问题,又要考虑到文艺演出所需要的音乐丰满度问题.利用odeon声学设计分析软件对该市民文化活动中心的声学问题进行了模拟分析.对建成后的市民文化活动中心进行的测量表明声学设计取得了满意的效果. 相似文献
3.
4.
No authorship indicated 《Canadian Metallurgical Quarterly》1987,42(4):320a
The awards for Distinguished Contributions to Psychology in the Public Interest recognize persons who, in the opinion of the Committee on Public Interest Awards, have advanced psychology as a science and/or profession by a single extraordinary achievement or a lifetime of outstanding contributions in the public interest. These contributions might include the identification or solution of significant social problems; unusual initiative or dedication to activity in the public interest; or the integration of the science and/or profession of psychology with social action in a manner beneficial to all. The Committee is authorized to present two awards per year, each with a prize of $2,000. The second award, for which recipients may not have held a Ph.D. for more than 15 years, was established to recognize the large number of excellent psychologists who have made significant contributions to the public interest during the early stages of their careers. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
5.
A prospective investigation of the impact of childhood sexual abuse on the development of sexuality.
Noll Jennie G.; Trickett Penelope K.; Putnam Frank W. 《Canadian Metallurgical Quarterly》2003,71(3):575
The sexual attitudes and activities of 77 sexually abused and 89 comparison women (mean age=20.41, SD=3.38) were assessed 10 years after disclosure in a longitudinal, prospective study of the long-term effects of childhood sexual abuse. Abused participants were more preoccupied with sex, younger at first voluntary intercourse, more likely to have been teen mothers, and endorsed lower birth control efficacy than comparison participants. When psychological functioning earlier in development was examined, sexual preoccupation was predicted by anxiety, sexual aversion was predicted by childhood sexual behavior problems, and sexual ambivalence (simultaneous sexual preoccupation and sexual aversion) was predicted by pathological dissociation. Findings also indicate that biological father abuse may be associated with greater sexual aversion and sexual ambivalence. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
6.
Why was there a preponderance of women engaged in laboratory-based studies of animal behavior in Britain in the early years of the 20th century? As a new experimental subject with recently neglected potential, animal psychology then represented an opportunity for women to make further inroads into academic science. Because the study of psychology before World War I offered negligible professional opportunities for the application of the subject, the intake of students was restricted. Perhaps this encouraged academic access to it by aspiring female scientists who felt that career prospects, uncertain and socially unexpected of them in any case, were worth chancing for greater long-term rewards. The academic circumstances and contributions of 3 British female pioneers in experimental comparative psychology are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
7.
During the day, there are considerable variations in the climatic factors prevailing in these regions. This is especially so during the 24-hour daily cycle of the long, hot and dry summer (mid-May to midOctober). Such climatic conditions have had a considerable impact on the daily living pattern of family life in the same season, particularly in the urban areas. During the same 24-hour cycle, they have compelled the inhabitants to shift their living activities both vertically in section and horizontally in plan; they do this in pursuit of more acceptable, if not, desirable internal thermal environmental ambience. 相似文献
8.
Ackerman Steven J.; Hilsenroth Mark J.; Knowles Eric S. 《Canadian Metallurgical Quarterly》2005,42(2):225
The present study examines the concurrent and predictive relationships between therapist psychodynamic-interpersonal activity and therapist-rated alliance. Ratings from 45 patient and therapist dyads engaged in short term psychodynamic psychotherapy from a point early (3rd or 4th session) and late (the session at which 90% of the treatment was completed) in treatment were used. The results suggest that therapists who have positive views of the alliance early in treatment also have positive views of the alliance later in treatment. Therapists who used psychodynamic-interpersonal activities early in treatment also made use of psychodynamic-interpersonal activities later in treatment. Moreover, the use of psychodynamic-interpersonal activities early in treatment was positively related to both global and specific aspects of therapist-rated alliance late in treatment. (PsycINFO Database Record (c) 2011 APA, all rights reserved) 相似文献
9.
Lists of core competencies or critical capabilities are popular and plentiful. This article makes the case that a single core competency or critical capability accounts for professional success: the exercise of judgment. Judgment is the critical determinant of the quality of professional decisions, actions, and evaluations. Practical models of judgment are presented. The elements and dynamics of judgment are detailed. Individual, group, and organization implications are explored. Coaching and consulting interventions are explained. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
10.
Responds to the comments by J. J. Kramer (see record 1990-58925-001) on the current author's original article (see record 1986-19878-001), in which Matarazzo contends that computerized clinical psychological test interpretations offer considerable potential for improving the work of health service providers. However, cost additions associated with this technology have increased the probabilities that legislative, judicial, and administrative restrictions and sanctions will be imposed. Here, Matarazzo notes that he finds nothing in Kramer's comments that is inconsistent with the opinions that Matarazzo himself offered. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献