英和和英

a cordless microphone

a cordless microphone

a directional microphone

a directional microphone

audio system for recoding sound

a wireless security system

a wireless apparatus

a portable radio microphone

a wireless receiver

a small microphone called lip microphone

a two-way radio communication system (usually microwave)

a radio receiver

a radio receiver＝a radio (receiving) set

a wireless operator

a radio operator

a communication system for communicating at a distance

radio

a small communications facsimile device that operates over a telephone line

a contact microphone for listening through walls

a system of electronic equipment for recording or reproducing sound

a wireless communication system used in weather observation

a licensed amateur radio operator

an antenna

an aerial

having hidden electronic eavesdropping devices

a high fidelity stereophonic sound system

a telephone with a microphone and loudspeaker

a complete set of audio devices

an audio or video apparatus

a system that links audio and video equipment