中文摘要：

根据 Corti (OC ) 的机关的颤动特征，七个假设被做简化模型的结构，并且一个机械 OC 模型被建立。用变化原则，排水量分析表示在某个压力下面被解决。结果在对试验性的数据的好同意，显示出公式的有效性。与损坏在诊所由噪音引起了结合了，外部毛细胞和外部 stereocilia 变硬能导致听觉的损失和阀值移动的产生，这被发现。另外，结果证明那高频率回声在基部的膜(BM ) 的底部发生，并且低频率回声发生在 BM 的顶。这证实频率 BM 的选择特征。进一步，使用这个公式能避免 envi- ronment 的干扰和测试人员的技术水平，并且能客观地评估 OC 的性能。

英文摘要：

According to the vibration characteristics of the organ of Corti （OC）, seven hypotheses are made to simplify the structure of the model, and a mechanical OC model is established. Using the variational principle, a displacement analytical expression is solved under a certain pressure. The results are in good agreement with experimental data, showing the validity of the formula. Combined with the damage caused by noise in clinic, it is found that the hardening of outer hair cells and outer stereocilia can lead to loss of hearing and generation of threshold shift. In addition, the results show that high frequency resonance occurs at the bottom of the basilar membrane （BM）, and low frequency resonance occurs at the top of the BM. This confirms the frequency selective characteristics of the BM. Further, using this formula can avoid interference of the envi- ronment and the technical level of the test personnel, and can evaluate performance of the OC objectively.