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| mean effective pressure | |||
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有 效均压 : 38 phrases in 12 subjects |
| Automobiles | 8 |
| Aviation | 6 |
| Earth sciences | 3 |
| General | 1 |
| Mechanics | 1 |
| Metallurgy | 1 |
| Military | 1 |
| Mining | 1 |
| Oil / petroleum | 2 |
| Shipbuilding | 3 |
| Technology | 10 |
| Wind Energy | 1 |
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