noisemete噪音计noisen.噪声；喧闹声；响声vt.谣传vi.大声说话；发出噪音noise-free operation无噪声工作noise detecting section干扰检测部分noise pollution sources噪声污染源noise power uncertainty不确定的噪声功率noise-adding receiver噪声注入接收机Noise Control Committee噪声控制委员会Noise Equivalent Signal噪音等价信号noise control programme噪声控制规划noise voltage generator噪声电压发生器Noise Masking Threshold噪音掩蔽阈值