Do not use the days that water, sulfuric acid, acid wash surface.
不要用天那水，硫酸，酸液搽洗表面。
During the acid wash step, chemical contact is usually sufficient.
在酸洗过程中，化学试剂的接触通常式充分的。
Newly purchased bottle what needs attention, or else to use acid to wash?
新购置瓶需要注意什么，或者使用酸性清洗？
Wash with oxalic acid were effective.
与草酸洗是有效的。
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。
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。
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