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катод прямого накала stresses
el.	filament-type cathode; filament ary cathode; heater cathode; fil
met.	incandescent filament
phys.	direct-heated cathode
tech.	directly heated cathode; directly heated filament; filament; directly heated cathode filament; filament cathode; straight filament; filamentary cathode; f= filament

катод прямого накала: 14 phrases in 4 subjects

Electronics	4
Metrology	1
Military	1
Technology	8