瓶装水也是用反向渗透系统所以电阻就降低了

来源: nolaking 于 2017-06-12 10:00:58 [旧帖] [给我悄悄话] 本文已被阅读：次

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瓶装水也是用反向渗透系统 所以电阻就 降低了