Using a new method of controlling effectivediaphragm area introduced in this paper, static and complex dynamic characteristic problems can be solved successfully.
用控制减压阀膜片有效面积的方法，成功地解决减压阀的动态性能和静态性能的设计问题。
2
The calculation models of the effective area, the rate of change of the effective area and the rate of change of the effective volume are established for the diaphragm air spring.
Conclusion LVRS, an effective method to treat pulmonary emphysema, can improve the lung function by recovering both pulmonary elastic recoil and the mechanical characteristics of the diaphragm.