通气道风道用以输送或排出空气的矩形或圆形管道可用金属板石棉水泥胶合板塑料等材料制做
Air ducts are rectangular or circular pipes used for conveying or discharging air, which can be made of materials such as metal plates, asbestos, cement, plywood, and plastic
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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