Mass spectrometer and Mass-spectrometer

Mass spectrometer noun - Spectroscope for obtaining a mass spectrum by deflecting ions into a thin slit and measuring the ion current with an electrometer.

Mass-spectrometer and mass spectrometer are semantically related. In some cases you can use "Mass-spectrometer" instead a noun phrase "Mass spectrometer".

Mass spectrometer and mass-spectrometer are semantically related. Sometimes you can replace phrase "Mass spectrometer" with "Mass-spectrometer", this phrases are similar.