介绍堰式和槽式明渠流量计的测量原理，提出了一种新的堰式流量计算公式。
The measuring principles of weir and flume open channel flowmeters are introduced and a new calculation formula for weir flowmeter is stated.
论述了直角三角形堰式明渠流量计算问题，提出了一种高精度流量计算经验公式。
The calculation of right angled triangle weir-type open channel flowmeter is described. A high precision experiential flow calculating formula is given.
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