Gas ultrasonic flow meter
multi path ultrasonic flow meter
ultrasonic flow dtector
Acyclic Water Flow System AWFS
Cyclic Water Flow System CWFS
debris flow monitoring station
deterministic stochastic numerical model of the groundwater flow system
diverging-converging flow system
flow efficiency
通流效率
流动效率
井口助流歧管头
(流动效率)
完善系数