It might be as well to consult Magnus and Mrs. Derrick.
还是找曼克奈斯和台力克太太去商量吧。
And all those give as well a reference to offshore derrick design.
此方法也可供海洋井架电算参考。
The driller and the derrick man must remain in constant radio contact.
司钻和井架工必须用对讲机一直保持联系。
The driller and the derrick man must remain in constant radio contact.
司钻和井架工必须用对讲机一直保持联系。
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