电动机: electric motor; motor (俗称“马达; 电滚子”)◇电动机并联法 parallel connection of the motors; 电动机效率 motor efficiency; 电动机增益 motor gain; 电动机转子 motor rotor
频: Ⅰ形容词(次数多) frequent 短语和例子这儿春季雨很频。 rains are frequent here in spring.Ⅱ副词(屡次) frequently; repeatedly 短语和例子捷报频传。 reports of new victories keep pouring in.Ⅲ名词1.[物理学] (物体每秒钟振动的次数) frequency 短语和例
