短語詞組短語roller bin gate 滾筒式料倉閉鎖器free roller gate 輥閘門fixed roller gate 定輪閘門roller -bearing gate 滾輪閘門wedge roller gate 楔形滾動閘門free roller gate detail 輥閘門Gate roller 輥門Gate fixed roller 定輥閘門 返回 roller gate