n.代偿;减刑;交换;经常来往
Commutation is distinct from reprieve. 减刑不同于缓刑。
He appealed for (a) commutation of the death sentence to life imprisonment. 他已上诉请求将死刑减为无期徒刑。
Commutation failures are one of the common faults in HVDC systems. 换相失败是直流系统的最常见故障之一。