全文获取类型
收费全文 | 34934篇 |
免费 | 1420篇 |
国内免费 | 9篇 |
专业分类
36363篇 |
出版年
2020年 | 346篇 |
2019年 | 481篇 |
2018年 | 634篇 |
2017年 | 652篇 |
2016年 | 646篇 |
2015年 | 480篇 |
2014年 | 577篇 |
2013年 | 2610篇 |
2012年 | 1057篇 |
2011年 | 1123篇 |
2010年 | 670篇 |
2009年 | 659篇 |
2008年 | 974篇 |
2007年 | 958篇 |
2006年 | 901篇 |
2005年 | 790篇 |
2004年 | 791篇 |
2003年 | 697篇 |
2002年 | 735篇 |
2001年 | 1127篇 |
2000年 | 1030篇 |
1999年 | 777篇 |
1998年 | 396篇 |
1997年 | 334篇 |
1996年 | 327篇 |
1992年 | 586篇 |
1991年 | 590篇 |
1990年 | 565篇 |
1989年 | 576篇 |
1988年 | 570篇 |
1987年 | 520篇 |
1986年 | 538篇 |
1985年 | 593篇 |
1984年 | 472篇 |
1983年 | 448篇 |
1982年 | 365篇 |
1981年 | 352篇 |
1979年 | 539篇 |
1978年 | 385篇 |
1976年 | 371篇 |
1975年 | 443篇 |
1974年 | 502篇 |
1973年 | 522篇 |
1972年 | 413篇 |
1971年 | 395篇 |
1970年 | 392篇 |
1969年 | 422篇 |
1968年 | 503篇 |
1967年 | 434篇 |
1966年 | 433篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
131.
132.
Fixation accuracy was related to perception of laterally presented consonants. Small left-eye fixation inaccuracy influenced perceptual performance of 8 men and 8 women. 相似文献
133.
The purpose of this study was to investigate differences in scores of 59 mentally retarded adults (mild, moderate, severe, or profound), 133 advantaged, and 130 disadvantaged (low income) children in Grades 1, 2, 3 on the Primary Measures of Music Audiation. Test-retest reliabilities for the Tonal and Rhythm subtests were .81 and .86, respectively, for the retarded group. Analysis of variance indicated that the mildly retarded children performed significantly better than other groups of retarded children on these two tests. 2 x 3 analyses of variance indicated that third graders from both advantaged and disadvantaged groups performed significantly better than the first or second graders on both subtests and that advantaged children performed significantly better than the disadvantaged. However, disadvantaged children made greater gains, especially for third graders, than the advantaged. 相似文献
134.
E Schier T Yecunnoamlack T Tegegne 《Psychiatrie, Neurologie, und medizinische Psychologie》1988,40(8):490-499
Of 1240 first-time consultations in the neuropsychiatric clinic of the Gondar College of Medical Sciences in an eleven-month period during 1985 and 1986, 152 patients came seeking relief from seizures. This paper deals with the origins and background of diagnostic, differential diagnostic, and therapeutic problems, and with problems of social rehabilitation. While in such a tradition-bound society certain hypotheses continue to have an unfavorable effect, there are unmistakable signs of positive change against a background of rapid social change. Conclusions are drawn for the better management of epileptic patients in developing countries. 相似文献
135.
Effects of up-down visual inversion on motor skills 总被引:1,自引:0,他引:1
Y Nakajima 《Perceptual and motor skills》1988,67(2):419-422
The movement of a hand or fingers and locomotion of the body by a subject wearing prisms which inverted his visual world were investigated. A subject wore frame-spectacles (without prisms) for the first two days and then wore up-down inverting spectacles (with prisms) for the next four days, followed by wearing the former frame-spectacles again for one day. Measurements were made of skill on star-drawing, pegboard tests, and on zigzag-walking and walking up and down stairs. There were no differences on the five measures during acquisition for the four tasks, which suggests smooth progress of prism-adaptation by this man. 相似文献
136.
Y Nakajima 《Perceptual and motor skills》1988,67(1):39-42
The purpose of this study was to examine whether a change of perceptual framework may affect the occurrence of apparent movement. Apparent movement was observed by one subject living over four days in the prismatically inverted visual world, because this situation was considered as the operation in which the subject was forced to change the perceptual framework to adapt himself to the novel environment. Apparent movement with two points was measured in vertical and horizontal configurations before wearing and after removing the prism as well as while wearing it. Analysis showed significant effects of prism-wearing on the occurrence of apparent movement in both vertical and horizontal configurations. Although further elaboration is required, an hypothesis was suggested from the viewpoint of the loss of visual position constancy. 相似文献
137.
138.
139.
140.