Proposes an optical method of measuring the height and stagger of contact wire simultaneously in railway electrification.
本文提出一种测量电气化铁路接触线高度和拉出值的光学测量方法。
Familiar with railway electrification, contact line system, processes such as mechanics, plastics, founding, forging, molding etc.
熟悉铁路电气化、接触网系统、机械、材料、铸造、锻造、模具等加工过程。
Thee keyboard can also power itself using something called contact electrification.
通过名为接触起电的机能这种键盘还能够自行充电。
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