modulatorn.
'mɔdjuleitə, -dʒu-
中文n. [电子] 调幅器，[电子][通信] 调制器；调节人
词根词源
modulator (n.)c. 1500, from Latin modulator, literally "one who modulates" in various senses (such as "musical director"), agent noun from past participle stem of modulari (see modulation). Meaning "device that produces modulation of a wave" is from 1919.
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