The passivation pharmaceutical of Model is the aftertreatment of the acidcleaner uses the pharmaceutical.
钝化剂是酸性清洗剂的后处理用剂。
2
In order to clean the scale of system effectively, it would take much longer time to clean than that using organic acidcleaner.
为了有效地清除系统内的水垢，清洗时间较有机酸清洗长。
3
If it does not, check the toilet bowl rim holes (through which the water enters the bowl) with a small mirror, and if they are blocked, clean them with a small nail and acid-based porcelain cleaner.