词汇	frequency beat
释义	frequency beat 频率差拍
随便看	the mouth of a volcano the mouth of Hangzhou estuary the mouth of the cylinder The mouth of the river the mouth of the thames the mouth of Yangtze River The mouth;perhaps from a Gaelic word the mouthpiece of a pipe the mouthpiece of a telephone the mouthpiece of radical extremists the mouthpiece of the E the mouthpiece of the E- the mouthpiece of the party the mouthpiece of the people the mouth waters after the mouth waters at the mouth waters for The mouthy basking shark is a filter-feeder the mouzhuan calligraphy The movable are so odd The movable control element of such a device the movable probe The movable target on a leveling rod the movement the Movement