ResultsThe course, tube - retained time and the negative equalize function of eustachian tube(ET) related to Progno-sis.
结果病程、留管时间及咽鼓管负压平衡功能对预后均有影响。
Based on a supposed mathematical model, the calculation of parameters of opening function of Eustachian tube was elaborated.
根据设想的数学模型，探讨了耳咽管开闭功能参数的计算方法。
The hearing recovery of interlay method group was better than underlay method group. Function of Eustachian tube kept good condition in interlay method group.
夹层法组听力恢复明显优于内植法组，且术后咽鼓管功能保持良好；
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