enclosed self-ventilation
enclosed self-ventilated type motor 封闭式自通风电动机 enclosed self-ventilation 封闭式自通风 enclosed separate-ventilation 封闭式外通风 ..
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短语
封闭式自通风电动机
enclosed self-ventilated type motor
封闭式自然通风电机
enclosed self-ventilated machine
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