短語詞組短語gearbox x head 變速箱頭head gearbox 旋翼減速器front head gearbox 前旋翼減速器rear head gearbox 后旋翼減速器front end head gearbox 前旋翼減速器rotor head gearbox 旋翼減速器frong head gearbox 前旋翼減速器head breadth gearbox 旋翼減速器 返回 gearbox head