柯林斯詞典mass spectrometer (also mass spectroscope) 1. N an analytical instrument in which ions, produced from a sample, are separated by electric or magnetic fields according to their ratios of charge to mass. A record is produced (mass spectrum) of the types of ion present and their relative amounts 質(zhì)譜儀 返回 mass spectrometer劍橋詞典a piece of equipment used by scientists to separate ions into groups to measure and compare their mass and electrical charge 質(zhì)譜儀 返回 mass spectrometer