单词	focusing cone
释义	focusing cone 聚焦锥
随便看	switching turnout switching-type observers switching type power amplifier switching type power supply switching unit switch ing unit switching units switching using punched switching using punchedperforatedtapes switching value switching valve switching variable switching virtual calling switching virtual networking switching, voice-frequency switching voltae regulator switching voltage switching voltage regulator switching ware switching wave switching waveform switching wheel switching window switching with load Switching with low leakage rate