输出端固定：可以控制输入数据格式，但输出数据必须采用您不能控制的特定格式。
Output is fixed: you can control the input data format but must output data in a specific format, over which you have no control.
在分布式处理控制执行程序(DPCX)中，应用程序和终端之间的通信的一种方式，通信期间操作员可以不管预定的格式或字段而输入数据。
In DPCX, communication between an application program and a terminal during which the operator enters data without regard for any predefined form or field.
在分布式处理控制执行程序(DPCX)中，应用程序和终端之间的通信的一种方式，通信期间操作员可以不管预定的格式或字段而输入数据。
In DPCX, communication between an application program and a terminal during which the operator enters data without regard for any predefined form or field.
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