derrick boom是什么意思 derrick boom怎么读
derrick boom的用法和样例
- Angle the boom arm to position the microphone precisely.
调整话筒吊杆臂角度，准确定位麦克风的位置。 - As a commercial diver in the offshore oil fields of the Gulf of Mexico, I was assigned to a job on board a derrick barge.
我在墨西哥湾的一个海面油田做职业潜水员，一次被指派到一艘吊杆起重驳船上工作。
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