通常与宏指令有关的一种用语，即把一条源语言指令转换成若干条机器语言指令。
A phrase often associated with a macro instruction where one source language instruction is converted to several machine language instructions.
当用宏指令调用定义时，从宏定义的模型语句中产生汇编语言语句。
To produce assembler language statements from the model statements of a macro definition when the definition is called by a macroinstruction.
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