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Cleaning device for heat transfer agent of heater has expander having gas flow openings corresponding to number of heating gas paths
Cleaning device for heat transfer agent of heater has expander having gas flow openings corresponding to number of heating gas paths
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机译：用于加热器的传热剂的清洁装置具有膨胀器，该膨胀器具有与加热气体路径的数量相对应的气体流孔
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摘要
An expander has gas flow openings provided according to the number of heating gas paths (18). The gas flow openings are provided with thick brushes.
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