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. Perfume Glass Bottle,Perfume Bottles,Small Perfume Bottles,Empty Perfume Bottles Taixing Rongxing Glass Co., Ltd , https://www.rongxglass.com