discriminator

discriminator
noun
  1. a characteristic which enables things, people, or classes to be distinguished from one another
    鉴别(事物,人或阶层的)特征,区别性特征
    age should not be used as a primary discriminator in recruitment.
    年龄不应成为招聘时的主要区分标准。
  2. (Electronics)a circuit or device which only produces an output when the input exceeds a fixed value
    (电子)甄别器,鉴频器
    ■a circuit which converts a frequency-modulated signal into an amplitude-modulated one
    将调频信号转换成调幅信号的线路
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