oil lubrication

基本解释

Oxygen compressor usually use no oil lubrication compressor.
氧氣壓縮機通常使用無油潤滑壓縮機。
Compression purity require special high gas such as propane, generally USES no oil lubrication.
壓縮純度要求特別高的氣躰如丙烷，一般採用無油潤滑。
If you use oil lubrication, can use soap lubricant or ethanol soap solution, in order to provide the necessary lubrication.
若採用油潤滑時，可用肥皂潤滑劑或乙醇肥皂溶液，以提供必要的潤滑。

There is no alternative to machine lubrication outside of oil.
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