金属板材冲压装备自动化技术现状与发展趋势_电子资料文库 关键词】:金属板材,冲压装备,自动化,技术现状,发展趋势 [gap=428]Key words: Metal sheet, Press equipment, Automatic, Technique actuality, Progress
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Virtual realistic technique and to person research result of the space cognition of organic combined to push forward the research and the development of the virtual actuality.
虚拟现实技术与对人空间认知的研究成果的有机结合推进了虚拟现实的研究与开发。
Based on the developed actuality of FSO technology, this paper discussed the key technique of FSO.
本文在空间光通信技术研究现状的基础上，论述了空间激光通信中的关键技术。
The actuality of rainwater use in north China was analyzed, and the domestic theory and practical of rainwater use technique and some overseas successful experience were introduced in this paper.
分析了北方雨水利用的现状，对国内雨水利用技术理论和实践以及国外较成功的经验作了详细的介绍。
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