本建议对用于测量国际电话电路及各电路段上的噪声和其他干扰信号的噪声计提出了基本的要求。
This Recommendation provides basic requirements for psophometers to be used for the measurement of noise and other interfering signals on international telephone circuits and circuit sections.
本建议对用于测量国际电话电路及各电路段上的噪声和其他干扰信号的噪声计提出了基本的要求。
This Recommendation provides basic requirements for psophometers to be used for the measurement of noise and other interfering signals on international telephone circuits and circuit sections.
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