One of the schemes adopts the integral equation with equivalent current as an unknown function, whereas the other USES the integral equation with total electric field as an unknown function.
一种方案采用以极化电流为未知函数的积分方程，另一种方案采用以总电场为未知函数的积分方程。
2
Linear equation with oneunknown, parabolic equation and nonlinear damped vibration equation well fit to describe the dynamics of Lou soil buffering rate or value.
一元线性方程、抛物线方程及非线性阻尼振动方程对描述土壤缓冲速率及缓冲量动力学具有适应性；
3
It is proved that the intersecting line of the two curved surface is space curve, and the equation is quartic implicit function with oneunknown.