Default Operand-Size 缺省操作数大小
invalid operand size for instruction 操作数长度对于指令无效
size operand [计] 长度操作数
Illegal size for operand 使用的操作数太小出错
Operand Stack Size 操作数栈大小
If the size of the operand is not specified in the instruction, that means either that the size doesn't matter (as in logical instructions, for instance) or that it is using a 32-bit value size.
如果操作数的大小未在指令中指定，这就意味着操作数的大小并不十分重要(例如逻辑指令)或者它的大小为32位。
Technically, the term work size(also called word length) describes the size of an operand register, but it is also used more loosely to describe the size of the pathway to and from the processor.
字的大小这一术语（也称字长）描述了操作数寄存器的大小，但它也可用来不那么严格地描述出入处理器的通道的大小。
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