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| monocolor method; monocolour method | |||
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单色法 : 27 phrases in 9 subjects |
| Advertising | 1 |
| Animal husbandry | 1 |
| Bridge card game | 1 |
| Earth sciences | 1 |
| Electronics | 2 |
| General | 3 |
| Technology | 12 |
| Textile industry | 4 |
| Water resources | 2 |
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