directioning frequency response of microphone
direction mark meter方位标仪 directioning frequency response of microphone传声器指向性频次反响 directioning pfound attern of microphone传声器指向性图案 ..
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directioning frequency response of microphone
麦克风的定向频率响应
以上为机器翻译结果，长、整句建议使用 人工翻译 。