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【求助】DI water 是什么water ? 已有7人參與
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原文是 The resulting DI water from the Calvert City plant has a resistivity which exceeds 18 megohms, compared to resistivity of 10 in typical pharmaceutical-grade DI water and less than one in drinking water. Eventually this value declines, and the bed must be regenerated. Normally, regeneration is required only about once a month. 謝謝了!~ |
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