在传统的开式膨胀系统中，由于高温热媒油与空气接触容易氧化。
The high temperature thermal medium oil touchs the air in the traditional expansion system, it will be oxidated quickly.
以热介质油为加热媒介的供热系统在海上油气田开发工程中正越来越多地得到应用。
The heating system using thermal oil as medium, has found more and more application in offshore engineering development.
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