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| 发动机进气门开启 | |||
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| 进气阀打开 | |||
| 开放吸气; 进气阀开; 阀门吸气开放 | |||
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| 进气阀打幵 | |||
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| 进气门开启 | |||
| inlet opens: 5 phrases in 3 subjects |
| Hydroelectric power stations | 3 |
| Steel production | 1 |
| Technology | 1 |
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