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Liquid flow measurement in open channels by weirs and flumes .

用溢流堰和水槽法测量明渠中的液流.

The flow of rivers is regulated by weirs and dams .

河水的流向可以用堤坝控制。

Guo shoujing , a 13th-century scientist and hydrologist , is still revered for designing a network of lakes , weirs and artificial waterways .

13世纪的科学家兼水文学家郭守敬设计了湖泊网、围堰和人工运河，现在仍然受到人们的尊敬。

Five weirs and hydropower tatsu ware confluence .

五堰和达水电洁具总汇。

They shot some pretty weirs and rapids .

他们看到了一些美丽的堰坎和湍滩。