词汇	Wan Kan
释义	Wan Kan 📍万甘缅
随便看	cathode eletrode material cathode emission cathode emission area cathode emission current density cathode emission efficiency cathode emission materials cathode emissivity cathode emitter cathode emitting diameter cathode end cathode evaporation cathode excitation cathode extraction cathode fail cathode fall cathode falldrop cathode fall space cathode fatigue cathode feedback cathode feedback amplifier cathode feedback circuit cathode field cathode filament cathode film cathode flame