 |
对开管
| 锤击
| 取土器
| 对开管 | |
| oil | center split pipe; split duct |
| 锤击 | |
| hydroel.st. | peening |
| met. | hammer blow; ramming |
| space | hammer; peen |
| 取土器 | |
| hydroel.st. | soil sampler |
| |||
| center split pipe; split duct | |||
| center split tube; centre split pipe; split pipe | |||
| 对开管: 18 phrases in 7 subjects |
| Drilling | 1 |
| Engineering geology | 3 |
| General | 1 |
| Oil / petroleum | 2 |
| Refrigeration | 1 |
| Technology | 9 |
| United Nations | 1 |
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