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| 摩擦角 | |||
| 自然倾斜坡度 | |||
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angle of friction : 49 phrases in 6 subjects |
| Architecture | 1 |
| Bridge construction | 6 |
| Engineering geology | 6 |
| Hydroelectric power stations | 10 |
| Soil science | 1 |
| Technology | 25 |
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