The reason to use pure water is to limit the corrosion potential of the coolant water during normal operation.

用纯净水的目的是为了限制日常操作中对冷却剂潜在的腐蚀。

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Corrosion products formed by these reactions can prevent normal valve operation and can become embedded in the elastomeric stem tip, preventing the valve from making a complete seal.

这些反应产生的腐蚀产物会阻止正常的阀门运转，深入到人造橡胶阀杆顶端，造成阀门不能完全密封。

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Leather Watchband is needless to say, sweat corrosion can cause premature hardening of belt cracking, normal maintenance should avoid sweating the wet period wear belt table.

皮表带就更不用说了，汗渍的腐蚀会使皮带过早硬化开裂，正常保养应该避免多汗多雨时期戴皮带表。

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