composition analysis instrument的用法和樣例：
例句
- Mass Spectrometer is the most widely used high-end analytical instrument.
質(zhì)譜是常用分析儀器中比較昂貴的設備。 - The aim of the dissertation is to study the Monochromatic Optical Controller of portable instrument,which bases on The NIRS.
本論文主要研究開(kāi)發(fā)基于近紅外光譜技術(shù)的便攜式快速分析儀器中單色光控制器。
