derrick man

基本解釋

The driller and the derrick man must remain in constant radio contact.
司鉆和井架工必須用對(duì)講機(jī)一直保持聯(lián)系。
blog.sina.com.cn
The derrick man, positioned at the crown block, is to advise the driller when the snake is coming through the crown sheave.
井架工看守在天車上，當(dāng)蛇皮接繩器到達(dá)天車時(shí)，通知司鉆。
blog.sina.com.cn
The air hoist may be used to hoist a workman (other than derrick-man) when a bosom chair with safety belt or derrick climbing belt is used to hoist the workman.
可以使用配了安全帶或助爬帶的工作吊椅進(jìn)行高空作業(yè)。