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| chemical investigation; chemical test | |||
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| chemical festing | |||
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化学试验 : 23 phrases in 14 subjects |
| Animal husbandry | 1 |
| Chemistry | 1 |
| Earth sciences | 1 |
| Ecology | 1 |
| Electronics | 1 |
| General | 1 |
| Geology | 1 |
| Metallurgy | 2 |
| Nautical | 1 |
| Oil / petroleum | 1 |
| Reproductive biology | 1 |
| Space | 1 |
| Technology | 9 |
| Textile industry | 1 |
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