常見例句four-stage contra rotating fan turbine 四級逆轉(zhuǎn)風(fēng)扇透平Control principle and familiar fault analysis of contra rotating steering oar 對轉(zhuǎn)舵槳操縱原理及常見故障分析Analysis about the Construction Principle and Characteristics of Contra Rotating Propeller 對轉(zhuǎn)螺鏇槳的結(jié)搆原理及特點分析contra rotating fan 反鏇式通風(fēng)機Per contra I don't ask her to forget but to remember. 相反，我不是要她忘記，而是要她記住。The female is generally drab, the male per contra brilliant. 一般來說雌性是黃褐色的，而雄性是色彩鮮明的。 返回 contra-rotating