OG 12. 107. Which 指代 emission?
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.
不是说which不能指代整句话么?我觉得which应该指technique阿?但是现在貌似是修饰emission?
感谢解答!谢谢! |