And so, one constraint is the process be done reversibly.

一种约束，就是过程是可逆的。

youdao

The first and second configurations are stable but reversibly interchangeable.

第一和第二皱折是稳定的，但 是能够可逆地互换。

youdao

The first and second configurations are stable but reversibly interchangeable.

第一和第二皱折是稳定的，但 是能够可逆地互换。

youdao