The mass outflow rate minus the mass inflow rate is equal to the time rate of change of mass storage in the parallelepiped . 质量的流出率减去质量的流入率等于贮存在这个平行六面体中的质量的时间变化率。
2.
Study on calculation of water inflow rate of bottom hole of gas well with water 有水气井井底出水量计算方法研究
