chiasmata / chiasma (crossing over)

According to the application purpose, circuit switching of instruments can be divided into emergency substitution, cross substitution and complementary substitution.

根据应用目的将仪器电路的代换划分为 :应急代换 ;交叉代换 ;互补代换 ,并将仪器电路的代换由过去的维修目的延伸为功能扩展。