A device that converts a property of an input signal, such as frequency or phase, into an amplitude variation, depending on how the signal differs from a standard or reference signal.
分词翻译
相的英语翻译：
each other; mutually; appearance; looks; look at and appraise; photograph posture 【化】 phase 【医】 phase
位的英语翻译：
digit; location; place; potential; throne 【计】 D 【化】 bit 【医】 P; position 【经】 bit
