全文获取类型
收费全文 | 182659篇 |
免费 | 2153篇 |
国内免费 | 2481篇 |
专业分类
教育 | 137840篇 |
科学研究 | 14839篇 |
各国文化 | 319篇 |
体育 | 11455篇 |
综合类 | 11782篇 |
文化理论 | 149篇 |
信息传播 | 10909篇 |
出版年
2024年 | 58篇 |
2023年 | 315篇 |
2022年 | 1180篇 |
2021年 | 2065篇 |
2020年 | 2697篇 |
2019年 | 2015篇 |
2018年 | 1346篇 |
2017年 | 1275篇 |
2016年 | 1703篇 |
2015年 | 3736篇 |
2014年 | 9816篇 |
2013年 | 10217篇 |
2012年 | 13191篇 |
2011年 | 14457篇 |
2010年 | 10796篇 |
2009年 | 10248篇 |
2008年 | 11925篇 |
2007年 | 15276篇 |
2006年 | 14951篇 |
2005年 | 13436篇 |
2004年 | 11722篇 |
2003年 | 10545篇 |
2002年 | 8497篇 |
2001年 | 6805篇 |
2000年 | 3862篇 |
1999年 | 1561篇 |
1998年 | 736篇 |
1997年 | 617篇 |
1996年 | 559篇 |
1995年 | 313篇 |
1994年 | 303篇 |
1993年 | 221篇 |
1992年 | 171篇 |
1991年 | 104篇 |
1990年 | 80篇 |
1989年 | 52篇 |
1988年 | 29篇 |
1987年 | 9篇 |
1986年 | 6篇 |
1985年 | 63篇 |
1984年 | 55篇 |
1983年 | 37篇 |
1982年 | 48篇 |
1981年 | 40篇 |
1980年 | 11篇 |
1979年 | 22篇 |
1978年 | 38篇 |
1977年 | 41篇 |
1976年 | 34篇 |
1957年 | 8篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
71.
讨论了提高经贸件汉译英译品质量的重要性,以及目前普遍存在的各种问题。通过对两个件英译质量的分析,归纳出一些汉译英的基本原则以及控制译质量的几点措施。 相似文献
72.
73.
胡中藻文字狱案是乾隆前期文人因诗文遭祸的一宗大案,乾隆因此掀起了一场政治运动,江西籍官员裘曰修等人也受到牵连.裘曰修曾无意透露胡中藻诗集被查的消息,实际其与胡中藻并无交往,也没有刊刻、传播胡中藻诗集等直接行为.乾隆虽未将裘曰修治罪,但江西的其他涉案官员则遭到了相应的处罚. 相似文献
74.
《Critical Studies in Education》2013,54(3):289-294
What we have come to understand as education has a temporal dimension: the school year, progression based on time, timetables, and so on. Similarly, our understanding of teaching is framed by temporality, primarily through salary structures and an implicit coupling of performance with time in the field. We argue that this underlying generative temporality is under revision. This revision is taking place through policy moves such as the professional standards agenda, which unlike salary structures (at least current ones) privilege demonstrable performance over tenure. Such a revision places time not as an external measure in which events and practices take place, but as the very core of such practices and events. Taking stimulus from the role of work-integrated learning within initial teacher education, we engage with this revision of temporality in education. With increasing attention being paid to temporality in scholarship across a number of disciplines, there has arguably never been a more appropriate opportunity to engage with the temporality of teaching. 相似文献
75.
陈鼎常 《黄冈师范学院学报》2001,21(3):64-65
用简洁的方法,证明了如下结果:若整系数多项式f(x)=x^n a1x^n-1 a2x^n-2 …+an-1x an的所有根的绝对值都不大于1,an≠0,则f(x)的根都是单位根。 相似文献
76.
Jianyi Li Lanying Nie Zeyu Li Lijun Lin Lei Tang Jun Ouyang 《Anatomical sciences education》2012,5(6):330-339
Anatomical corrosion casts of human specimens are useful teaching aids. However, their use is limited due to ethical dilemmas associated with their production, their lack of perfect reproducibility, and their consumption of original specimens in the process of casting. In this study, new approaches with modern distribution of complex anatomical spatial information were explored to overcome these limitations through the digitalization of anatomical casts of human specimens through three‐dimensional (3D) reconstruction, rapid prototype production, and Web‐based 3D atlas construction. The corrosion cast of a lung, along with its associated arteries, veins, trachea, and bronchial tree was CT‐scanned, and the data was then processed by Mimics software. Data from the lung casts were then reconstructed into 3D models using a hybrid method, utilizing both “image threshold” and “region growing.” The fine structures of the bronchial tree, arterial, and venous network of the lung were clearly displayed and demonstrated their distinct relationships. The multiple divisions of bronchi and bronchopulmonary segments were identified. The 3D models were then uploaded into a rapid prototype 3D printer to physically duplicate the cast. The physically duplicated model of the lung was rescanned by CT and reconstructed to detect its production accuracy. Gross observation and accuracy detection were used to evaluate the duplication and few differences were found. Finally, Virtual Reality Modeling Language (VRML) was used to edit the 3D casting models to construct a Web‐based 3D atlas accessible through Internet Explorer with 3D display and annotation functions. Anat Sci Educ. © 2012 American Association of Anatomists. 相似文献
77.
In this case study, an online community was designed at a secondary school in China for the teachers to prepare their lessons collectively, reflect on their teaching practices, collect comments from peers, and share resources. A survey was administered to the teachers to investigate their perceptions on the online community for their professional development. Two hundred and eighty-three teachers responded to the survey and eight teachers were further interviewed by email. The result showed that most teachers liked using the online community as they could gain subject knowledge and could obtain support from peers, share experiences and get feedback, and exchange resources. Also, online entries confirmed that transformational changes in teaching pedagogy and students’ learning activities occurred along the time. However, certain teachers did not participate in the online community frequently. This paper describes the context of the case study, design dimensions of the online community, teachers’ positive perceptions on using the online community, and transformational changes. Also, strategies for promoting effective use of the online community are discussed and follow-up studies to address the challenges involved in this study are proposed. 相似文献
78.
《庄子》形容词兼语句共有36句,分为五种句型,其最基本的句型结构模式是:S+PV1+OS+PA2。其余的各种句型可以看作是它的变体。此外,兼语句有时还和连谓结构组成多重复杂的谓语句,其结构模式有两种:S+PV1+(OS)+PA1+“而”+(Adv+)PA2/PV2PV(+O);S+PA1+O+PV2+(OS)+Adv+PV2+O。 相似文献
79.
赵欣 《唐山师范学院学报》2010,32(5):40-41,52
构建了一种蔬菜大棚智能环境参数测控系统。该系统采用分布式结构,CAN总线通讯方式。系统通过实时检测温室环境温度、湿度、光照度和C02浓度以及土壤湿度,与预设的参数指标进行比较,如果超出范围,自动打开控制系统,控制电灯、风机、喷水器、加热器、降温泵等进行操作,使蔬菜生长环境实现自动控制.上位机软件采用VB语言编写,可实现数据的存储、显示、控制参数设置、数据查询和打印等功能。 相似文献
80.
女子体育是唐代体育文化的重要组成部分,它不但在中国古代体育史上熠熠生辉,在世界古代体育史上也独树一帜。分析唐代女子体育发展的盛况及原因可知,其发展是唐代社会进步和女子地位改善的产物。这一研究为当今女子体育以及社会体育的发展提供参考。 相似文献