The entire range of an instrument or voice.
乐器或声音的整个音域。
To summarize, we must specify a low and a high value to define the range of an instrument.
总结一下，我们必须定义仪表量程的最大值和最小值。
Measuring the reverse bias current of an APD requires an instrument that can measure current over a wide range as well as output a voltage sweep.
测量APD的反向偏置电流需要一种能够在很宽范围内测量电流并且能输出扫描电压的仪器。
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