Although the term boiler may refer to the overall steam generating unit, the term "boiler surface" dose not include the economizer or any component other than the boiler itself.
虽然术语中锅炉是指整个蒸气生产装置，但是术语“锅炉表面”不包括节能装置或者除了锅炉本省以外的其他组件。
In retrofit, measures of not varying the main body and changing over to use membrane economizer for enhancing wear-resistant capability of the heating surface have been taken.
改造采取主体不变，改用膜式省煤器的措施来提高受热面的耐磨性。
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