话频: voice frequency电流: electric current话频电流继电器: voice frequency relay话频电路: voice frequency circuit调幅话频电话: amplitude modulation vtf话频电路测试器: voice-frequency circuit-test unit语音加话频电报: speech plus voice frequency telegraph边频电流: side frequency current; side-frequency current超高频电流: ultrahigh-frequency current导频电流: pilot current; pilotcurrent低频电流: lfc; low frequency current高频电流: high-frequency current◇高频电流表 high-frequency ammeter高频电流表: high frequency ammeter; high frequency amperemeter工频电流: power current零频电流: zero frequency current; zero-frequency current射频电流: radio frequency current; rf current射频电流计: radio frequency ammeter声频电流: audio-frequency current◇声频电流波形分析器 sonagraph视频电流: light current; video current音频电流: tone currents中频电流表: medium frequency ammeter四线制话频电话中继器: four wire voice frequency telephone repeater; four-wire voice frequency telephone repeater话频: voice frequency (vf)高频电流淬火: hardening by high frequency curr-ent高频电流加热: diathermic heating; dielectric heating
