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| 等值粗糙度 | |||
| 相当粗糙度 | |||
| 等价糙度 | |||
| 等值糙率; 等值糙度; 等效糙率 | |||
| 当量粗糙度 | |||
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equivalent roughness : 6 phrases in 4 subjects |
| Earth sciences | 1 |
| Nautical | 1 |
| Oil / petroleum | 1 |
| Technology | 3 |
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