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| 穿透系数; 贯入系数 | |||
| 穿透率; 贯穿系数 | |||
| 渗透系数 | |||
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penetration coefficient : 8 phrases in 4 subjects |
| Engineering geology | 2 |
| Oil / petroleum | 1 |
| Refrigeration | 1 |
| Technology | 4 |
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