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| friction testing machine | |||
| frictional testing machine | |||
| frictional testing machines | |||
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| SAE friction machine | |||
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摩擦试验机 : 14 phrases in 7 subjects |
| Automobiles | 1 |
| Aviation | 1 |
| Chemistry | 1 |
| General | 1 |
| Oil / petroleum | 2 |
| Space | 1 |
| Technology | 7 |
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