这是一个优雅的解决方案，不使用铜钎焊加热卫生饮用水的小学问题。
This is an elegant solution to an elementary problem of heating hygienic drinking water without using copper brazing.
工艺应用实践表明，钎焊翅片管应用于炼油厂高压加氢加热炉对流段是安全可靠的。
Application of soldered finned tube to convection section of high hydrogenation heater in refinery is proved to be safe and reliable through industrial practice.
按加热方法来分，有炉中钎焊、激光钎焊和感应钎焊等。
And their heating means are different, such as furnace brazing, induction brazing and laser brazing.
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