The apparatus is made of zinc plating iron plate, and composed of the respiratory chamber, the water conducting tube and the handle.
该呼吸器用镀锌薄铁制成，由呼吸室、导水管、手柄等部分组成。
The apparatus is made of zinc plating iron plate, and composed of the respiratory chamber, the water conducting tube and the handle.
该呼吸器用镀锌薄铁制成，由呼吸室、导水管、手柄等部分组成。
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