trolley crane
常见例句
- Double-trolley bridge crane is a kind of bridge crane.
双小车桥式起重机是桥式起重机的一种。 - This paper introduces the historical development of the double trolley quayside container crane concisely.
岸边集装箱起重机是集装箱码头进行船舶装卸作业的主要设备。 - 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.
框架上面的四角装有四只滑轮，钢丝绳绕过滑轮向上系于起重行车的卷筒上。
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