The amount of water flowing into the mine per unit time is called the mine water inflow, expressed in m 3 /h. The ratio of the amount of water influx to the annual output of ore is called the water content coefficient.
Electric Bicycle Clutch Handle
bike Reverse Switch，Reverse Switch,Electric Bicycle Reverse Switch Combination
Ningbo Yupai Electromechanical Technology Co., Ltd , https://www.yupaimotorcycle.com