dissolved free oxygen 中文意思是什麼
dissolved free oxygen
解釋
溶解游離氧-
Must be softened and treated to make sure that is free from suspended solids and non - carbonate hardness, has a low carbonate hardness, is practically free from oil and dissolved oxygen and has a low dissolved silica content
必須經過軟化和處理保證沒有懸浮固體和非碳酸鹽的硬度，有低碳酸鹽硬度
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