heating and ventilating eauipment
对讲设备 talk back equipment~talk back facilities 暖通设备 heating and ventilating eauipment 防盗设备 burglary-resisting installation~g installation ..
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heating and ventilating eauipment
加热和通风设备
以上为机器翻译结果，长、整句建议使用 人工翻译 。