密闭系统所要求的水质一般是软化水。
The water quality required in the closed circulation is generally of the soft water.
过滤系统通过密闭系统保证水不流失。
Filters a and B ensure that no rinse waters go to drain giving a closed system.
主要用作中间体及密闭系统中的制程溶剂,通常在进口物品中有发现。
Mainly used as intermediate and as a process solvent in closed systems. The substance may occur in imported articles.
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