expression conversion

• 表达式变换

expression conversion的用法和样例：

例句

1. The use of expression such as these for the aerodynamic forces converts the differential equations of motion into integro-differential equations.
   如对空气动力采用这类表达式，就将运动的微分方程变换成积分微分方程。
2. The general expression for determining deflections of the stepped shaft is developed using a method combining singularity functions with Laplace transformations.
   利用奇异函数与拉普拉斯变换相结合的方法，导出了阶梯轴弯曲变形的普遍表达式。