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| oil-tempering | |||
| oil temper; oil tempering | |||
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| oil temper | |||
| oil tempering | |||
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| oil tempering | |||
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油 回火 : 17 phrases in 7 subjects |
| Agriculture | 1 |
| Automobiles | 1 |
| Construction | 1 |
| Metallurgy | 7 |
| Nautical | 1 |
| Oil / petroleum | 1 |
| Technology | 5 |
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