常見例句雙語例句Double-trolley bridge crane is a kind of bridge crane.雙小車橋式起重機是橋式起重機的一種。This paper introduces the historical development of the double trolley quayside container crane concisely.岸邊集裝箱起重機是集裝箱碼頭進行船舶裝卸作業(yè)的主要設備。The four corners of the frame are provided with four pulleys. Wire ropes pass round the pulleys and are tightened on the reel drum of a crane trolley.框架上麪的四角裝有四衹滑輪，鋼絲繩繞過滑輪曏上系於起重行車的卷筒上。ip.com 返回 trolley crane