全文获取类型
收费全文 | 21849篇 |
免费 | 887篇 |
国内免费 | 580篇 |
专业分类
电工技术 | 213篇 |
技术理论 | 12篇 |
综合类 | 7112篇 |
化学工业 | 1499篇 |
金属工艺 | 500篇 |
机械仪表 | 722篇 |
建筑科学 | 2518篇 |
矿业工程 | 266篇 |
能源动力 | 159篇 |
轻工业 | 527篇 |
水利工程 | 225篇 |
石油天然气 | 124篇 |
武器工业 | 1028篇 |
无线电 | 1356篇 |
一般工业技术 | 1224篇 |
冶金工业 | 1562篇 |
原子能技术 | 57篇 |
自动化技术 | 4212篇 |
出版年
2024年 | 32篇 |
2023年 | 217篇 |
2022年 | 324篇 |
2021年 | 492篇 |
2020年 | 409篇 |
2019年 | 280篇 |
2018年 | 222篇 |
2017年 | 459篇 |
2016年 | 559篇 |
2015年 | 707篇 |
2014年 | 1419篇 |
2013年 | 1123篇 |
2012年 | 1288篇 |
2011年 | 1704篇 |
2010年 | 1608篇 |
2009年 | 1663篇 |
2008年 | 1413篇 |
2007年 | 1412篇 |
2006年 | 1401篇 |
2005年 | 1138篇 |
2004年 | 991篇 |
2003年 | 1062篇 |
2002年 | 867篇 |
2001年 | 537篇 |
2000年 | 511篇 |
1999年 | 346篇 |
1998年 | 173篇 |
1997年 | 117篇 |
1996年 | 92篇 |
1995年 | 77篇 |
1994年 | 80篇 |
1993年 | 41篇 |
1992年 | 41篇 |
1991年 | 33篇 |
1990年 | 42篇 |
1989年 | 38篇 |
1988年 | 40篇 |
1987年 | 28篇 |
1986年 | 27篇 |
1985年 | 14篇 |
1984年 | 17篇 |
1982年 | 20篇 |
1966年 | 13篇 |
1965年 | 11篇 |
1964年 | 18篇 |
1963年 | 11篇 |
1958年 | 11篇 |
1957年 | 22篇 |
1955年 | 24篇 |
1954年 | 13篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
为国民身体素质、探索具有中国特色的现代食育之路,必须深入分析与探索中国饮食文化中的食育理念。文章以传统饮食文化为出发点和落脚点,概括出医食同源、饮食有节、饮食有礼等先进的食育观点。分析传统饮食与现代食育的关系,认为食育是弘扬传统饮食文化的重要途径,传统饮食文化是发展现代食育的基础。但探索现代食育仍面临着西方快餐文化冲击和国民食育进程缓慢等困境,必须采取强化国民食育意识、加强食育法制建设、健全食育教育体系、推进食育试点工作等措施促进中国传统饮食文化融入食育体系建设,真正探索具有中国特色的食育之路。 相似文献
2.
As immersive virtual reality (IVR) systems proliferate in classrooms, it is important to understand how they affect learning outcomes and the underlying affective and cognitive processes that may cause these outcomes. Proponents argue that IVR could improve learning by increasing positive affective and cognitive processing, thereby supporting improved performance on tests of learning outcome, whereas opponents of IVR contend that it could hurt learning by increasing distraction, thereby disrupting cognitive learning processes and leading to poorer learning outcomes. In a media comparison study, students viewed a biology lesson either as an interactive animated journey in IVR or as a slideshow on a desktop monitor. Those who viewed the IVR lesson performed significantly worse on transfer tests, reported higher emotional arousal, reported more extraneous cognitive load and showed less engagement based on EEG measures than those who viewed the slideshow lesson, with or without practice questions added to the lessons. Mediational analyses showed that the lower retention scores for the IVR lesson were related to an increase in self-reported extraneous cognitive load and emotional arousal. These results support the notion that immersive environments create high affective and cognitive distraction, which leads to poorer learning outcomes than desktop environments. 相似文献
3.
传统建筑工艺是建筑遗产中不可或缺的重要组成部分,然而辉煌背后,传统建筑工艺却面临着断代或失传的风险。职业教育倡导的“教学做”一体化教学模式,强调培养学生的职业技能、动手能力的特点与传统建筑工艺传承所需的千锤百炼相吻合,并在实践教学中已取得了一定的成果,但同时显现了不足,文章将针对这些不足之处,以广州城市职业学院城市建设工程系为例,探讨职业院校开展传统建筑工艺的教学模式。 相似文献
4.
LUO Jin-ling LIU Luo-ren 《广东电脑与电讯》2020,1(4):11-13
In view of the problems in the construction of characteristic professional groups in higher vocational colleges, the professional group of "intelligent manufacturing" is taken as the research object, and the "platform + module" suitable for the development
of the industry will be constructed according to the content of the vocational ability planning courses of the post group. The curriculum system establishes the framework of professional groups, and explores and forms a strategic study to optimize and integrate professional group resources. 相似文献
5.
7.
We define the emerging research field of applied data science as the knowledge discovery process in which analytic systems are designed and evaluated to improve the daily practices of domain experts. We investigate adaptive analytic systems as a novel research perspective of the three intertwining aspects within the knowledge discovery process in healthcare: domain and data understanding for physician- and patient-centric healthcare, data preprocessing and modelling using natural language processing and (big) data analytic techniques, and model evaluation and knowledge deployment through information infrastructures. We align these knowledge discovery aspects with the design science research steps of problem investigation, treatment design, and treatment validation, respectively. We note that the adaptive component in healthcare system prototypes may translate to data-driven personalisation aspects including personalised medicine. We explore how applied data science for patient-centric healthcare can thus empower physicians and patients to more effectively and efficiently improve healthcare. We propose meta-algorithmic modelling as a solution-oriented design science research framework in alignment with the knowledge discovery process to address the three key dilemmas in the emerging “post-algorithmic era” of data science: depth versus breadth, selection versus configuration, and accuracy versus transparency. 相似文献
8.
周雨晴 《石油化工管理干部学院学报》2020,(1):17-21
国有企业党校是全国党校系统的重要组成部分,也是国有企业培养领导干部和业务骨干的摇篮。其职责定位应当以研究宣传党的理论方针政策为宗旨,以服务集团公司的中心工作为根本,以开展干部教育培训为中心。国企党校哲学教育培训工作要紧紧围绕这一定位,遵循哲学的价值观、认识论和方法论属性,充分发挥信仰指向作用、理论支撑作用和行动引领作用,并从企业和学员两方面着手,坚持以问题为导向、以创新促发展、用学术讲政治的方法。 相似文献
9.
Ming-Puu Chen Asta Y. Z. Lord Yu-Yao Cheng Ku-Chou Tai Wen-Harn Pan 《Journal of Computer Assisted Learning》2020,36(3):383-396
Reflective judgement is crucial for medical-related practitioners in dealing with controversial issues. However, the conformity phenomenon is likely to occur and interfere with reflective judgement learning during interactive activities. Effective strategies are required to moderate the conformity behaviour tendency (CBT) and improve reflective judgement performance (RJP). This study demonstrates two significant results: (a) Compared with the guided self-reflection learning strategy, the online collective reflection (OCR) learning strategy effectively weakened the learners' general CBT while dealing with professional controversial issues; and (b) a significantly negative correlation between the RJP achieved and the change of CBT in online environment was detected in the OCR group. The implications and potential applications in higher education were discussed. Further studies are needed to confirm the long-term effects and the extending application to other professional studies. 相似文献
10.
随着建筑业技术进步和转型升级,高职建筑工程技术专业建设应顺应新时代要求,产教融合,办出特色。本文提出了“四个对接一个融合”的特色专业建设新思考。 相似文献