短語詞組短語roller bin gate 滾筒式料倉閉鎖器free roller gate 輥牐門fixed roller gate 定輪牐門roller -bearing gate 滾輪牐門wedge roller gate 楔形滾動牐門free roller gate detail 輥牐門Gate roller 輥門Gate fixed roller 定輥牐門 返回 roller gate