It is effective to wash its tube pass with some solution and its shell pass with acid.

为此，配制一定浓度的溶液分别对表面冷凝器壳程进行药洗、管程进行酸洗，取得了良好效果。

youdao

It is effective to wash its tube pass with some solution and its shell pass with acid.

为此，配制一定浓度的溶液分别对表面冷凝器壳程进行药洗、管程进行酸洗，取得了良好效果。

youdao