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| 煤气节流喷射孔 | |||
| 引射器; 喷嘴; 气眼; 喷气孔 | |||
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gas orifice : 10 phrases in 4 subjects |
| Automobiles | 1 |
| Metallurgy | 4 |
| Oil / petroleum | 1 |
| Technology | 4 |
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