The process is called additive fabrication.

VOA: special.2010.10.29

Now. You might look at that and say, well that's just a lot like what we had over here Right? We had some additive constant plus a simpler version of the same problem reduced in size by 1.

现在你可能会看着这个说，这很像我们以前做过的,对不对？我们用一些附加的常量,加上问题的另外一个规模缩小了1的,简化版本来代替这个问题本身。

麻省理工公开课 - 计算机科学及编程导论课程节选

What we are going to say is that the wavefunction for molecular orbitals is going to be an additive sum of the wavefunctions of atomic orbitals.

我想说的是,分子轨道的波函数,就是多个原子轨道,波函数的线性叠加。

麻省理工公开课 - 固态化学导论课程节选