一种存取方法，只有当用户程序提出请求时，才能实现通过输入输出通道的数据传输。

一种存取方法，只有当用户程序提出请求时，才能实现通过输入输出通道的数据传输。的英文翻译

基本释义

• A method of access in which data transfers through input/output channels are made only as and when called for in a user program.