- auger stem
- sinker bar
- 冲击: lash; pound
- 式: type; style
- 钻杆: bull rod; bar; rod; drill st ...
- 冲击式钻杆的扶正器: sinker bar guide
- 冲击式钻机: hammer rock drill; impact drill; percu ion type boring machine; percussion borer; percussion drill; percussion type boring machine
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