| 释义 |
derrick boom
基本例句
吊杆
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。 |