夜: night; nighttime; evening电键: keyset; key; manipulator; te ...振铃电键: bell key; challenge switch; ring key; ringing key同线电话振铃电键: party line ringing key夜铃: night alarm bell; night bell电键: keyset; key; manipulator; telegraph key; key button夜铃服务: night ring service夜铃开关: night alarm switch电铃电池: dry cell for electric bell警铃电路: bell circuit振铃电流: ringing current振铃电路: ringing circuit振铃电码: ringing code振铃电平: ringing level振铃电压: ringing voltage振铃电源: ringing supply按电键: keying单电键: singlet linkage电键，键: key电键板: electric switch board; electric switch-board; keyboard电键法: key method电键管: keyer tube电键盒: ke box; key box电键架: key-frame电键排: strip of keys
