回复：这里的(which is)指代哪一个成份,会不会引起歧义?还

来源: 于 2004-12-05 15:24:46 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次
"which" indicates the action of "introducing the principle"..

It is a commonly accepted expression.

It is widely used in the scientific writing.