chemical emission是什么意思

chemical emission是什么意思 chemical reaction中的chemical的词性是什么? Chemical Auxiliary Agent 是什么 carbon-based chemical是什么 line-emission spectrum的中文翻译是什么?还有continuous spectrum Chemical（化工）的英文简写是什么? Chemical and Engineering News 是什么杂志 GMAT 问两道SC1,｛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, a chemical bolt和chemical exhaust emission是什么意思 vehicle emission是什么意思? emission sectors什么意思 radiation emission是什么意思 emission什么意思 emission reduction是什么意思 radiated emission是什么意思 spontaneous emission是什么意思 emission microchamber是什么意思