词汇	背投影
释义	背投影 back projection背投
随便看	loud-speaker system loudspeaker systems loudspeaker telephone loud speaker telephone loudspeaker telephone device loudspeaker telephone set loud-speaker telephone set loudspeaker tuned agile magnetron loudspeaker unit loudspeaker van loudspeaker voice coil loudspeaker warnings loudspeaker with amplifier,free-field loudspeaking loud speaking loud-speaking loudspeaking receiver loud speaking receiver loudspeaking set loudspeaking telephone loud speaking telephone loud speakingtelephonereceiver loud speaking telephone receiver loudspeaking telephone set loud speaking telephone set