同时介绍利用上述基本热力学数据计算石油天然气膨胀机制冷过程等熵效率；
The basic data thus obtained could be used for the calculation of the isentropic efficiency in the expanding process of natural gas in refrigeration.
同时介绍利用上述基本热力学数据计算石油天然气膨胀机制冷过程等熵效率；
The basic data thus obtained could be used for the calculation of the isentropic efficiency in the expanding process of natural gas in refrigeration.
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