正: the first month of the lunar ...冲: powerful; with vim and vigou ...正冲波: direct shock wave; normal shock wave正冲角: positive incidence正冲波, 正激波: direct shock wave正正冲突: plus plus conflict正冲击响应谱: positive shock response spectrum正冲头退料器: positive punch stripper正充电: at modest charges; be on charge正充: masamitsu正赤纬: plus declination正齿式行星减速齿轮: spur type planetary reducer正齿式行星齿轮装置: spur type planetary gearing