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| 固体摩擦; 干摩阻力; 干摩擦 (力) | |||
| 干摩擦 | |||
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dry friction : 11 phrases in 5 subjects |
| Aviation | 1 |
| Oil / petroleum | 2 |
| Rail transport | 2 |
| Space | 4 |
| Technology | 2 |
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