In assemble programming , that part of a source program in which a variable symbol can communicate its value 在汇编程序设计中,源程序中的某一部分,其中变量符号能传递它的值。
The action taken by the assembler when it replaces a variable symbol with a value , for example , during the expansion of a macro definition 汇编程序采用的一种动作,例如在宏定义展开时,它用一个值来代替一个变量符号。