The discrete equation was deduced by control volume integral method, and realized by numerical method.

用控制容积积分法导出了离散方程，并用数值方法进行了求解。

youdao

Both the volume integral equation method and the surface integral equation method are used in this paper.

分别运用了体积分方程法和面积分方程法来求解问题。

youdao

Method: To measure the serum AST by using the fixed volume integral number calibrating and unfixed volume integral number calibrating .

方法：采用固定体积分数校标和不固定体积分数校标对血清AST进行测定。

youdao

So for the reversible process, the work done is the integral under the pressure volume state function, the function of state.

对可逆过程，做的功,是压强体积态函数曲线下，的积分面积。

麻省理工公开课 - 热力学与动力学课程节选