特殊用法canonical commutation1.典型交换compulsory commutation1.强制解除forced commutation1.强制换向generator commutation1.发电机整流［换向］linear commutation1.直线性换向over commutation1.过整流resistance commutation1.电阻换向sparkless commutation1.无电花整流straight-line commutation1.直线整流super commutation1.超换［转］接thyratron commutation1.闸流管整流voltage commutation1.电压换向commutation of annuities1.年金折偿commutation of accrued annual leave1.积存事假的折付