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| combined drainage system | |||
| combined system | |||
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合 流 制 : 31 phrases in 14 subjects |
| Air defense | 1 |
| Automobiles | 4 |
| Aviation | 2 |
| Computers | 1 |
| Construction | 1 |
| Earth sciences | 1 |
| Ecology | 2 |
| Electronics | 1 |
| Environment | 1 |
| Hydroelectric power stations | 1 |
| Management | 1 |
| Oil / petroleum | 1 |
| Refrigeration | 1 |
| Technology | 13 |
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