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| 排放物气测试; 排气成分和数量研究 | |||
| 排气污染试验 | |||
| emission test: 18 phrases in 5 subjects |
| Automobiles | 7 |
| Aviation | 1 |
| Electronics | 3 |
| Metallurgy | 2 |
| Technology | 5 |
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