“污染等级”是指固体、液体或气体恶化绝缘强度或表面电阻率的程度。

"Pollution degree" describes the degree to which a soild liquid or gas which deteriorates dielectric strength or surf ace resistivity is adhering.

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这是最高等级有机认证的冷压植物油(实际上是液体植物蜡)。

This is the highest grade certified organic, cold pressed oil (actually a liquid plant wax).

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这些液体可能是溶剂型、油基、或水基的液体，具有不同的保护等级，可以从几个星期到许多月不等。

These fluids can be solvent, oil or water based and offer varying degrees of protection ranging from a few weeks to many months.

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