词组短语
双语例句
用作名词(n.)
- The ginpole is the simplest form of derrick.
起重吊杆是一种最简单的起重机。 - They were placed by a derrick mounted on rails on the bridge deck.
它们由轨道上的转臂吊机吊放在桥面上。 - We put up at the surface an oil derrick.
我们就在那块地面上竖起一个井架。 - The derrick has been skidded to the towing position.
井架已经移到适合托航位置。
权威例句
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