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| pneumatic automatic control | |||
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气 动 自动控制 : 28 phrases in 10 subjects |
| Automobiles | 8 |
| Aviation | 4 |
| Chemistry | 1 |
| Household appliances | 1 |
| Mechanics | 1 |
| Oil / petroleum | 1 |
| Rail transport | 1 |
| Refrigeration | 2 |
| Space | 2 |
| Technology | 7 |
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