microanalyser
/ˌmaɪkrəʊˈænəlaɪzə(r)/( <美> 亦作microanalyzer)
noun
- Chemistry an instrument in which a beam of electrons or other radiation is focused on to a minute area of a sample and the resulting secondary radiation (usually X-ray fluorescence) is analysed to yield chemical information【化】微量分析仪（或计）。