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   60728篇
  免费   2286篇
  国内免费   23篇
  63037篇
  2020年   561篇
  2019年   626篇
  2018年   832篇
  2017年   882篇
  2016年   978篇
  2015年   758篇
  2014年   847篇
  2013年   4224篇
  2012年   1634篇
  2011年   1627篇
  2010年   1042篇
  2009年   1013篇
  2008年   1490篇
  2007年   1421篇
  2006年   1240篇
  2005年   1206篇
  2004年   1133篇
  2003年   1069篇
  2002年   1104篇
  2001年   1810篇
  2000年   1757篇
  1999年   1274篇
  1998年   612篇
  1992年   1241篇
  1991年   1165篇
  1990年   1184篇
  1989年   1082篇
  1988年   1037篇
  1987年   1019篇
  1986年   1071篇
  1985年   1174篇
  1984年   936篇
  1983年   857篇
  1982年   608篇
  1981年   629篇
  1980年   552篇
  1979年   1049篇
  1978年   705篇
  1977年   661篇
  1976年   652篇
  1975年   921篇
  1974年   1055篇
  1973年   1101篇
  1972年   957篇
  1971年   908篇
  1970年   886篇
  1969年   875篇
  1968年   1136篇
  1967年   1050篇
  1966年   952篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
931.
932.
933.
934.
Measuring channel dependence in separate activation models   总被引:1,自引:0,他引:1  
  相似文献   
935.
936.
Movement rates of formant frequencies and the extents of articulatory change were spectrographically analyzed in the fLuent (VCV) utterances of 20 stutterers and nonstutterers. The velocities of articulator movement throughout the first vowel and velocities into the second vowel were not significantly different for the two groups. These mean rates of movement, although nonsignificant, were slower in stutterers and slightly more variable, and the extent of articulator movement was comparable. These results do not support the contentions that stutterers use coarticulatory movements that are too rapid or that stutterers have a poorer competence for rapid coordination of speech movements. The rationales of rate-control treatment methods to slow coarticulatory movements in stutterers need to be reexamined.  相似文献   
937.
Taste sensitivity for sodium chloride in solution and sensitivity and preference for sodium chloride in bread were measured in 14 male patients undergoing hemodialysis. There was an increase in sensitivity to salt taste following dialysis only when assessed using the bread samples. Patients on a lower sodium diet were more sensitive to salt taste in bread. Although the taste changes were not related to the decreases in serum sodium or to copper, greater increases in sensitivity were related to greater increases in serum zinc during dialysis.  相似文献   
938.
This study investigated the effect of EMG biofeedback training in reducing muscle tension among subjects who displayed Type A behavior. 22 Type A college students (19 to 22 yr. old) were randomly assigned to either a biofeedback group or a control group. After 6 wk. of training, Type A subjects showed a significant reduction in muscle tension for both resting and aroused states; however, the reduction of muscle tension did not result in reduction of Type A behavior patterns.  相似文献   
939.
Two studies that seem to show conflicting effects of sex role on psychomotor reminiscence and performance are reviewed, and an effort is made to reconcile the discrepant results.  相似文献   
940.
The performance of 81 gifted elementary students on the Visual Aural Digit Span test is discussed. The students generally showed advanced performance from Grade 1 through Grade 5 and from age 7-0 yr. through 11-11 yr. Performance at Grade 6 and the 12-0 to 12-11-yr.-old levels were generally at age-expected levels and were probably restricted due to the test's limited ceiling. Tables of means across grade and age and needs for further research are also presented.  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