常見(jiàn)例句雙語(yǔ)例句Double-trolley bridge crane is a kind of bridge crane.雙小車(chē)橋式起重機(jī)是橋式起重機(jī)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(jī)是集裝箱碼頭進(jìn)行船舶裝卸作業(yè)的主要設(shè)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(guò)滑輪曏上系於起重行車(chē)的卷筒上。ip.com 返回 trolley crane