[固]定[螺]距螺桨
fixed pitch propeller {= FPP
变螺距螺杆
Varying pitch screw
variabe pitch screw
pitch-varying spiral rod
change thread pitch screw
variable pitch screw
变螺距螺旋扫描
variable pitch helical scan
卡米瓦型可调螺距螺旋桨
KaMeWa type controllable pitch propeller
可变螺距螺桨
reversible pitch propeller
可变螺距螺旋桨
Variable pitch propeller
adjustable pitch propeller
controllable pitch propeller