通过对克劳修斯熵、玻耳兹曼熵的讨论，得到熵的本质和孤立系统的熵增加原理，并把孤立系统的熵增加原理推广为开放系统的熵原理。
Entropy increase principle in isolated system, which is deduced from the discussion of Clausius entropy and Boltzmann entropy, has further deduced entropy principle in open system as well.
目的通过对187例开放式乳突手术后耳漏的情况进行回顾性分析，以提高开放式乳突手术的治疗效果。
Objective A retrospective survey of 187 patients who underwent canal down mastoidectomy was performed in order to improve the outcome of the operation , emphasizing on otorrhea.
目的通过对187例开放式乳突手术后耳漏的情况进行回顾性分析，以提高开放式乳突手术的治疗效果。
Objective A retrospective survey of 187 patients who underwent canal down mastoidectomy was performed in order to improve the outcome of the operation , emphasizing on otorrhea.
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