通过读MMC文献:我发现首先要抓住问题核心，缩小打击面，学术上，只需要一个最简单的情况和例子说明自己的idea即可：
where for the sake of simplicity, the assumption that all structural
components are made from the same type material is adopted. For
the case where multimaterials are considered, one can resort to the
so-called “color level set” representation, which will not be
touched in the present study for the limitation of space.
——MMC