英语词汇“door operator”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	door operator
释义	door operator door operator On elevators, a device or assembly of devices which opens and closes a car door and/or hoistway door by power other than by hand, gravity, springs, or the movement of the car.
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