简答题 翻译：Finally, it should be noted that the effective compressibility of an oil-gas mixture below its bubble point pressure is large, since much of the volume decrease with pressure increase is associated with the change in phase of some the gas to a liquid.

【参考答案】

最后，应该注意油气混合物的有效压缩系数在压力低于泡点压力时是很大的，由于压力变大导致体积减小是和气体变为液体相联系的。