采用近似等价的方法，将含有混合密度的恢复方程简化为单一密度求解。

An approximate equivalence method is used to simplify the recovery equation with mixture densities into single density.

youdao

如果把这两个看做等价的，实际上，就是用函数的线性近似式来代替原函数。

And, if we set these things equal, what we get is actually, we are replacing the function by its linear approximation.

youdao

其中的一些术语进行了近似的分类——比如“主要开发者”和“维护者”是等价的。

For some terms, I have made a closest-approximation categorisation — for example equating "lead developer" with "maintainer."

youdao