Ｍ型返波振荡器

m-type backward-wave oscillator

M-type electron gun【电子】

M-type transit-time tube

M-type backward-wave tube【电子】;type-M carcinotron【电子】

m-type carcinotron

M-type skylight【建】

matrix cathode (M-type cathode) discharge tube

matrix cathode (M-type cathode), metal capillary cathode