auxiliary operation

名词 auxiliary operation:

1. a operation performed by off-line equipment not under the control of the central processing unit
   同义词：off-line operation

1. A directive(by means of a basic transmission unit) from an access method that causes the network control program to perform a data-transfer operation or auxiliary operation.
   在某种存取方法中，利用基本传输部件发出的一种指令，它使得网络控制程序执行数据转移或辅助操作。