全文获取类型
收费全文 | 9285篇 |
免费 | 694篇 |
国内免费 | 752篇 |
专业分类
电工技术 | 310篇 |
综合类 | 1825篇 |
化学工业 | 89篇 |
金属工艺 | 89篇 |
机械仪表 | 397篇 |
建筑科学 | 272篇 |
矿业工程 | 69篇 |
能源动力 | 21篇 |
轻工业 | 96篇 |
水利工程 | 49篇 |
石油天然气 | 46篇 |
武器工业 | 43篇 |
无线电 | 717篇 |
一般工业技术 | 271篇 |
冶金工业 | 562篇 |
原子能技术 | 15篇 |
自动化技术 | 5860篇 |
出版年
2024年 | 30篇 |
2023年 | 104篇 |
2022年 | 202篇 |
2021年 | 228篇 |
2020年 | 167篇 |
2019年 | 117篇 |
2018年 | 102篇 |
2017年 | 144篇 |
2016年 | 160篇 |
2015年 | 185篇 |
2014年 | 433篇 |
2013年 | 372篇 |
2012年 | 531篇 |
2011年 | 579篇 |
2010年 | 516篇 |
2009年 | 542篇 |
2008年 | 653篇 |
2007年 | 704篇 |
2006年 | 682篇 |
2005年 | 670篇 |
2004年 | 533篇 |
2003年 | 514篇 |
2002年 | 353篇 |
2001年 | 348篇 |
2000年 | 269篇 |
1999年 | 208篇 |
1998年 | 169篇 |
1997年 | 163篇 |
1996年 | 127篇 |
1995年 | 142篇 |
1994年 | 129篇 |
1993年 | 100篇 |
1992年 | 79篇 |
1991年 | 68篇 |
1990年 | 41篇 |
1989年 | 44篇 |
1988年 | 35篇 |
1987年 | 24篇 |
1986年 | 22篇 |
1985年 | 34篇 |
1984年 | 31篇 |
1983年 | 19篇 |
1982年 | 10篇 |
1981年 | 14篇 |
1980年 | 12篇 |
1979年 | 10篇 |
1978年 | 11篇 |
1977年 | 10篇 |
1975年 | 15篇 |
1971年 | 7篇 |
排序方式: 共有10000条查询结果,搜索用时 491 毫秒
991.
992.
隐马尔可夫模型(Hidden Markov Model,HMM)在自然语言处理、语音识别、模式识别等领域都得到了广泛的应用,特别是在词性标注中起到了很好的效果.词性标注在信息处理范畴内起着重要的基础性作用,词性标注的好坏直接影响着基于标注结果的各种信息处理的准确度.基于HMM分别实现了中文词性标注与英文词性标注,并对两... 相似文献
993.
994.
XML(eXtemible Markup Language)是一种可扩展的元置标语言,XML技术的出现,给互联网带来了无限的商机。可以说,XML已经渗透到Intemet的各个角落。文章分别介绍了两种标记语言:超文本标记语言(HTML)和可扩展标记语言(XMC),并对其作简单的比较分析。 相似文献
995.
To study age effects in the resolution of idiomatic semantic ambiguity, we focus on decomposability, the extent to which a literal reading of an idiom's words shares meaning with its figurative interpretation. Younger and older adults judged whether decomposable and nondecomposable idioms and nonidioms had a literal interpretation. Older adults were slower at making literality judgments and more sensitive to conflicts between literal and figurative meanings. The results support claims of decompositional analysis of idioms during later processing stages and of obligatory activation of figurative meanings. They also lend support to research that has shown age-related effects in ambiguity resolution. (PsycINFO Database Record (c) 2011 APA, all rights reserved) 相似文献
996.
I argue that intentional psychology does not stand in need of vindication by a lower-level implementation theory from cognitive science, in particular the representational theory of mind (RTM), as most famously Jerry Fodor has argued. The stance of the paper is novel in that I claim this holds even if one, in line with Fodor, views intentional psychology as an empirical theory, and its theoretical posits as as real as those of other sciences. I consider four metaphysical arguments for the idea that intentional psychological states, such as beliefs, must be seen as requiring in-the-head mental representations for us to be able to understand their characteristic causal powers and argue that none of them validly generate their desired conclusions. I go on to argue that RTM, or some computational version thereof, is not motivated by appeal to the nature of cognitive science research either. I conclude that intentional psychology, though an empirical theory, is autonomous from details of lower level mechanism in a way that renders RTM unwarranted. 相似文献
997.
金红平 《吉林化工学院学报》2013,(6):58-60
流行音乐歌词的语言是属于艺术语言范畴,要想在当代乐坛占有一席之位就必须具备别具一格的他人无法超越的音乐特色,在歌词的编排上要勇于创新,突破种种固定的思维模式限制。许嵩的音乐创作就是达到了一种悖逆传统突破常规的艺术效果,不拘一格的创作风格为他在华语乐坛上开辟了前所未有的广阔前景,从歌词的复杂性、陌生化、韵律性三个方面进行阐述,并对其作品的价值做进一步的鉴赏。 相似文献
998.
章蕊寒 《湖南冶金职业技术学院学报》2008,8(2):90-92
分析了涉外商务交际中所体现的礼貌原则及礼貌策略。礼貌原则有助于交际双方最终达成“双赢”。 相似文献
999.
Recording address traces that occur during a program execution is a significant technique for computer performance analysis. This paper describes a software method for address tracing via the instrumentation of C based languages. All program transformations are performed at the language level. This approach, which differs from the usual methods, allows portable and flexible program instrumentation. This tool has been developed to make easier the memory optimization of LIREChèques, an automatic bank check reading system. Two applications of the tool are clearly identified: (i) data cache use optimization, (ii) dynamic memory use optimization. 相似文献
1000.
Because of an increasing number of immigrants to the United States, many clinicians are faced with challenges and opportunities presented in working with clients through language interpreters. This article describes a phenomenological investigation focused on the processes related to therapy with limited English proficiency (LEP) clients through interpreters. The focus of the study was on clinicians' perceptions regarding professional and personal factors influencing services with LEP individuals, as well as contextual aspects of this work. In addition to highlighting specific characteristics and training needed for clinicians and interpreters who work with LEP clients, the readers will also learn about systemic changes that could improve the provision of mental health care to these clients. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献