Originally developed for detecting air pollutants, a
technique called proton-induced X-ray emission, which
can quickly analyze the chemical elements in almost
any substance without destroying it, is finding uses in
medicine, archaeology, and criminology.
A.原题
B. A technique originally developed for detecting
air pollutants, called proton-induced X-ray
emission,
which can quickly analyze the
chemical elements in almost any substance
without destroying it,
想问为什么A中的which可以跳跃修饰a technical 但是B中的which却只能就近修饰emmision呢?? 谢谢!!
-- by 会员 Jennifer789 (2010/2/5 10:34:41)