- cable tool wrench
- 顿钻: percussion drilling; America ...
- 大: big; large
- 扳手: spanner; wrench lever
- 钻铤大扳手: tool wrench
- 顿钻: [机械工程] (冲击钻) percussion drilling; american system drill; cable-system drill; churn drill◇顿钻机 percussion drilling rig; 顿钻钻头 chopping bit
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