pneumatic arm气动臂pneumaticadj.气动的；充气的；<宗> 灵魂的，精神的pneumatic mortar applying压力喷浆pneumatic step positioner气压步级定位器pneumatic ballast machine风动卸碴机pneumatic bellows gripper气动风箱夹具pneumatic cleaning system气流除尘系统pneumatic conveyor system气动输送系统pneumatic tamping machine气动打夯机pneumatic lever mechanism气动杠杆机构pneumatic conveyer system气动输送系统pneumatic tobacco feeding风力送丝