The measuring principles of weir and flume open channel flowmeters are introduced and a new calculation formula for weir flowmeter is stated.
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。
2
During the computation of dike burst, this thesis used the formula of the broad-crested weir without bank to fulfill it.
在进行溃口计算过程中，本文采用无坎宽顶堰流公式来进行计算；
3
The calculation of right angled triangle weir-type open channel flowmeter is described. A high precision experiential flow calculating formula is given.