全文获取类型
收费全文 | 1429篇 |
免费 | 67篇 |
国内免费 | 11篇 |
专业分类
电工技术 | 23篇 |
化学工业 | 363篇 |
金属工艺 | 28篇 |
机械仪表 | 50篇 |
建筑科学 | 28篇 |
矿业工程 | 1篇 |
能源动力 | 112篇 |
轻工业 | 89篇 |
水利工程 | 11篇 |
石油天然气 | 9篇 |
无线电 | 160篇 |
一般工业技术 | 366篇 |
冶金工业 | 62篇 |
原子能技术 | 13篇 |
自动化技术 | 192篇 |
出版年
2024年 | 6篇 |
2023年 | 24篇 |
2022年 | 82篇 |
2021年 | 70篇 |
2020年 | 71篇 |
2019年 | 47篇 |
2018年 | 88篇 |
2017年 | 67篇 |
2016年 | 46篇 |
2015年 | 39篇 |
2014年 | 81篇 |
2013年 | 138篇 |
2012年 | 74篇 |
2011年 | 104篇 |
2010年 | 71篇 |
2009年 | 79篇 |
2008年 | 73篇 |
2007年 | 59篇 |
2006年 | 42篇 |
2005年 | 51篇 |
2004年 | 40篇 |
2003年 | 16篇 |
2002年 | 26篇 |
2001年 | 20篇 |
2000年 | 10篇 |
1999年 | 8篇 |
1998年 | 15篇 |
1997年 | 11篇 |
1996年 | 7篇 |
1995年 | 8篇 |
1994年 | 10篇 |
1993年 | 1篇 |
1992年 | 6篇 |
1990年 | 2篇 |
1989年 | 1篇 |
1987年 | 3篇 |
1985年 | 3篇 |
1984年 | 1篇 |
1981年 | 3篇 |
1979年 | 2篇 |
1978年 | 1篇 |
1972年 | 1篇 |
排序方式: 共有1507条查询结果,搜索用时 15 毫秒
961.
Journal of Computer Virology and Hacking Techniques - We have utilized two distinct models to identify the obscure or new sort of malware in this paper. GoogleNet and ResNet models are researched... 相似文献
962.
Mukherjee Amartya Dey Nilanjan Kumar Rajesh Panigrahi B. K. Hassanien Aboul Ella Tavares João Manuel R. S. 《Wireless Networks》2019,25(5):2675-2695
Wireless Networks - Flying Ad-Hoc networks (FANET) are the extended paradigm of the mobile Ad-Hoc networks and, perhaps, one of the most emerging research domains in the current era. A huge number... 相似文献
963.
964.
Kansal Sachin Kumar Rajesh Mukherjee Sudipto 《Multimedia Tools and Applications》2021,80(8):11865-11886
Multimedia Tools and Applications - This paper proposes a design of a state estimator for tracking and predicting the object trajectory for the manipulation using a dexterous multi-fingered Delta... 相似文献
965.
Rajesh Madhuvilakku Yan Wei-Mon Yen Yi-Kuang 《Journal of Applied Electrochemistry》2022,52(8):1231-1248
Journal of Applied Electrochemistry - A glassy carbon electrode was modified with a 2D-networked nanostructure composed of graphitic carbon nitride and tungsten oxide nanoparticles (2D-g-C3N4/WO3)... 相似文献
966.
Ram R. Saravana Kumar M. Vinoth Ramamoorthy S. Balaji B. Saravana Kumar T. Rajesh 《Wireless Personal Communications》2021,117(4):2903-2927
Wireless Personal Communications - The applications and scope of the Internet of Things (IoT) goes on increasing when cloud computing combines with IoT. Cloud enriches the capacity of IoT in... 相似文献
967.
Rajesh Banu J Mohamed Usman T M Kavitha S Yukesh Kannah R Yogalakshmi K N Sivashanmugam P Amit Bhatnagar Gopalakrishnan Kumar 《International Journal of Hydrogen Energy》2021,46(31):16565-16590
The potential to operate energy efficient and less expensive production methods are important in biohydrogen production. Biological hydrogen production is often constrained by less productivity. However, to obtain industrial level implementation, greater productivity is essential. Researches on various bioreactors configurations and influencing factors were deeply investigated in this regard. The bioreactors operated in batch mode are appropriate for preliminary optimization whereas industrial level execution needs continuous mode. The main objective of this review is to recap the limitations and constraints associated with bioreactor operation and to list out the enhancement approaches that are currently investigated for improved biohydrogen generation. Recent approaches designed towards biohydrogen production enhancement such as substrate pre-treatments, inhibitors removal, bioaugmentation, immobilization, effluent recycling, buffering capacity maintenance, exploitation of by-products etc., are reviewed thoroughly. 相似文献
968.
Agnihotri Rajesh Sawlani Ravi Azam M. M. Basumatary S. K. Sharma C. Mishra S. K. Kumar Rajeev Narayanan T. Rathore J. S. Tripathi Jayant 《Mapan》2020,35(1):53-67
MAPAN - Atmospheric dust originating from the Thar Desert (India) acts as the local source of mineral dust in South Asia, spreading over an area of 0.32?×?106 km2.... 相似文献
969.
R. Pandiselvam M.R. Manikantan Anjineyulu Kothakota G.K. Rajesh Shameena Beegum S.V. Ramesh 《Journal of Natural Fibers》2020,17(4):589-597
ABSTRACTCoconut husk is used as a natural fiber, and it is constantly gaining economic importance including in organic farming. Yet, there are major knowledge gaps regarding the engineering properties of coconut to design efficient coconut dehusking and coir manufacturing process. A sample of 40 coconuts of each variety, namely Malayan Yellow Dwarf, Malayan Orange Dwarf, Kera Shankara, Chowghat Orange Dwarf, and Chowghat Green Dwarf, were divided into two groups (20 dry and 20 green coconuts), and different engineering properties were measured. It was observed that coconuts show an extensive diversity in size, density, husk thickness, husk weight, shell thickness, shell weight, and kernel thickness, depending on variety and maturity. The present investigation provides necessary information and the need for classifying the coconut fruits based on size/variety rather than weight to design superior coconut dehusking machine. 相似文献
970.
Satish Kumar D. Chakradhar I. Rao Srinivas Puri Rajesh Manjini S. 《Journal of Failure Analysis and Prevention》2018,18(3):635-639
Journal of Failure Analysis and Prevention - Bar rolling is a semi-continuous rolling process involving a series of rollers, where a cast billet is shaped into the final TMT bar. In these mills,... 相似文献