短语词组短語chain -wheel 鏈輪chain type wheel 鏈式滾輪chain pitch wheel 鏈條齒輪chain messenger wheel 鏈輪structure of chain -wheel 鏈輪結搆the greater double -bank chain-wheel 較大尺寸雙排鏈輪step chain wheel 梯級鏈輪hand brake chain wheel 手制動鏈輪 返回 chain wheel