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| 信道检查 | |||
| 渠道节制闸 | |||
| 通道检查; 通道检验 | |||
| 沟内防止冲刷的挡水小堰; 渠道节制阀 | |||
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channel check : 8 phrases in 4 subjects |
| Electronics | 2 |
| Geophysics | 1 |
| Information technology | 2 |
| Space | 3 |
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