| 释义 |
钻杆 zuàn gǎn
基本例句
drill pipedrill stemdrill rodjackroddrill rockerboring barbore rodsteel stemboring roddrill barauger stembull rodjack roddrilling pipe
在把钻杆插入井下的过程中，他们意外地发现了一种稀有矿物的矿床。In course of sinking the well-shaft they came upon a deposit of a very rare mineral. |