在简并情况下，定态微扰理论变成一个比较复杂的问题。

In degenerate case, stationary perturbation theory becomes to a move complicated problem.

youdao

在简并情况下，定态微扰理论变成一个比较复杂的问题。

In degenerate case, stationary perturbation theory becomes to a move complicated problem.

youdao