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浏览/检索结果: 共6条，第1-6条 帮助 已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 Heat loss analysis and optimization of household solar heating system 期刊论文 Heat Transfer Research, 2019, 卷号: 50, 期号: 7, 页码: 659-670 作者:  Yang, Jieyuan;  Li, Jinping;  Feng, Rong 收藏  |  浏览/下载：3/0  |  提交时间：2020/11/14 Energy conservation  Fossil fuels  Heat convection  Heat losses  Heating equipment  Linear regression  Solar energy  Sustainable development  Water tanks  Wind  Energy supply system  Environmental benefits  Environmental factors  Environmental friendliness  Experimental modeling  Multiple linear regression method  Renewable energy source  Use of renewable energies   Development situation and trend of domestic and international aerial mapping camera (EI CONFERENCE) 会议论文 2011 International Conference on Mechatronic Science, Electric Engineering and Computer, MEC 2011, August 19, 2011 - August 22, 2011, Jilin, China Ming L. W.; Xue L.; Hui C. X.; Jun L. Q. 收藏  |  浏览/下载：12/0  |  提交时间：2013/03/25 In the modern military affairs  especially in the complex field  the acquirement of real-time battlefield information and intelligence is getting more and more important  most of this work is completed by aerial reconnaissance or aerial mapping equipment. Aerial mapping camera  with time-sensitive and flexible features  is playing an increasingly important role in modern warfare. With the development of technology  aerial mapping camera has also gone through several generations  gradually from film-based type to transmission type. The theory and composition of domestic and international typical aerial mapping camera is introduced from the development situation and trend in this paper. Finally  with the domestic research status  the development trend of aerial mapping camera is proposed. 2011 IEEE.   Advances in applications of hybrid intelligent fault diagnosis and prognosis technique 期刊论文 Zhendong yu Chongji/Journal of Vibration and Shock, 2011, 卷号: 30, 期号: [db:dc_citation_issue], 页码: 129-135 作者:  Lei, Ya-Guo;  He, Zheng-Jia 收藏  |  浏览/下载：6/0  |  提交时间：2019/12/10 Advanced signal processing  Artificial intelligent techniques  Development trends  Existing problems  Intelligent fault diagnosis  Mechanical equipment  State of the art   天然气管道裂纹电磁超声检测器研制 期刊论文 2010, 2010 黄松岭; 叶朝峰; 王珅; 赵伟; 董甲瑞; HUANG Song-Ling; YE Chao-Feng; WANG Shen; ZHAO Wei; DONG Jia-Rui 收藏  |  浏览/下载：3/0 星星公司战略研究 学位论文 2008, 2008 尧军 收藏  |  浏览/下载：1/0  |  提交时间：2016/02/14 铅酸蓄电池  机械设备  发展战略  Lead-Acid battery plates  Mechanical equipment  The strategy of development   Method for the fabrication of isometric mesh on the concave of a spherical substrate (EI CONFERENCE) 会议论文 2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies - Advanced Optical Manufacturing and Testing Technologies, November 2, 2005 - November 5, 2005, Xian, China Feng X.-G.; Sun L.-C. 收藏  |  浏览/下载：23/0  |  提交时间：2013/03/25 Metallic mesh has been widely used in electromagnetic interference windows. While the duty ratio of curved mesh equals to planar mesh'  the theory of planar mesh may be applied to curved mesh according to equivalent-circuit model. So the idea that latitude lines intersect latitude lines to form isometric mesh on the concave of a sphere is put forward  and the method of fabricating the mesh by concentric optical scan is introduced. The movement parts of equipment consist of an erection turning  a horizontal dividing and a pitching dividing spindle. Firstly  a spherical substrate is fixed on the horizontal dividing spindle that has been set horizontally on the erect turning spindle  the substrate revolves around the axis of the erect spindle  the tube of object lens that is fixed on the pitching dividing spindle steps at pitching direction  and a revolving circuit of the substrate corresponds to a step of the tube. Gradually  a set of latitude lines is attained. Afterward  the substrate makes a quarter turn around the horizontal spindle  another orientation latitude lines are also gained. Thus  the isometric mesh on the concave of a spherical substrate is gained. The process comprises surface cleaning  coating photoresist  laser direct writing  development  evaporated film  dissolving photoresist and plating. The fabricated spherical mesh has a line width of 7 m and a period of 600m. Experiment shows that infrared transmission and electromagnetism shield efficiency of the metallic mesh are relatively consistent with theoretical value.