因此，可以采用钢质螺旋槽管替代低压加热器中的铜光滑管，实现锅炉给水系统无铜化运行的要求。
Therefore, using steel spirally fluted tube replacing copper plain tube in HP preheater can be adopted for the boiler feedwater system without copper.
因此，可以采用钢质螺旋槽管替代高压加热器中的铜光滑管，实现锅炉给水系统无铜化运行的要求。
Therefore, the copper plain tube in HP heaters can be replaced with the steel spirally fluted tube for the requisition of having no copper in boiler feed water system.
空气通过过滤器和加热器，进入干燥器顶部的空气分配器，热空气呈螺旋状均匀进入干燥器。
Air is turned into hot air through air filter and heater and enters into hot air distributor at the top of dry chamber and enters into dry chamber spirally and evenly.
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