积灰结垢
Accumulated dust and dirt
以上为机器翻译结果，长、整句建议使用 人工翻译 。
对热管换热器工业应用过程中热管存在的相容性、积灰结垢和低温腐蚀等几个主要问题进行了分析，提出了相应的解决办法。
Problems such as compatibility, ash deposit and corrosion which appear in industrial application of heat-pipe exchanger are analyzed, meanwhile, measures are brought forward.
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