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重力式曝气器; 小瀑布; 跌水 | |||
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瀑布 (垂直的或陡峭的水流,它穿过岩石露头以上的已被侵蚀的悬垂性软岩,或流过一个高原的悬崖岸边。) |
cascade: 16 phrases in 10 subjects |
Automatic control | 1 |
Data processing | 1 |
Economy | 1 |
Electronics | 1 |
Environment | 1 |
Ichthyology | 1 |
International Monetary Fund | 3 |
Mathematics | 2 |
Statistics | 4 |
Technology | 1 |