短语词组短語left rotor stub shaft 左側轉子短軸rotor -shaft system 轉子軸系統rotor r shaft 轉子軸tail rotor drive shaft 尾槳傳動軸Angle of rotor shaft 風輪仰角Rotor shaft length 轉子軸長rotor shaft hatch 轉子軸孔ROTOR SHAFT SEAL 軸封 返回 rotor shaft