因本机有离合装置，怠速工作时，螺旋桨不旋转，所以在使用时更加安全。

Because of this machine are off devices, idle work, the propeller does not rotate, so when using the more secure.

youdao

因本机有离合装置，怠速工作时，螺旋桨不旋转，所以在使用时更加安全。

Because of this machine are off devices, idle work, the propeller does not rotate, so when using the more secure.

youdao