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1·In view of this, a variable pitch valve spring is designed to eliminate the axial shifting and radial drifting of the valve disk and improve the service life of the valve.

鉴于此，笔者试图设计泵阀的变螺距弹簧，以消除阀盘的纵向振谐窜动和径向失稳漂移，提高泵阀工作寿命。

2·Through the redesign and revamp of the valve disk and body of rotary spindle, the technology is simplified, the cost is reduced and a large amount of foreign exchange is saved for our country.

回转接头的阀芯和阀套经重新设计和改造后，简化了工艺，降低了成本，为国家节省了大量外汇。

3·A type of quick-opening valve whose orifice is opened and closed by a disk that pivots on a shaft in the throat of the valve.

一种快开式阀门，其孔口的开启和关闭靠装在阀门颈部枢轴上的圆盘。

4·The new Control-Disk valve meets API, ASME and EN standards, making it suitable for use in all world areas.

新的控制盘阀满足的API 、美国机械工程师学会和EN标准，使之适用于世界所有地区。

5·A disk turning on a diametrical axis inside a pipe, used as a throttle valve or damper.

节流阀，减压阀：管道内沿直径中心轴线上的圆片状旋钮，用作节流阀门或阀门。

6·According to the structural feature of parallel single disk gate valve, the strength and rigidity of body will be calculated with finite element method, and with cylindroid shell theory.

根据主闸阀结构特点，分别用有限元法和椭圆柱板壳理论公式计算了阀体的强度与刚度，并进行了分析对比，同时对闸板的刚度进行了校核。

7·It provides a valve ball or disk position for a specific input signal.

该类型定位器能按特定的输入信号使阀球或阀板停留在特定位置。

8·A new returnable actuator disk of metal seal structure butterfly valve was presented, and its principle, force analysis, characteristic of the actuator were discussed as well.

提出了一种双向压金属硬密封蝶阀蝶板可逆回转机构，讨论了可逆回转机构的工作原理、受力分析及特点。

9·Conclusion Bileaflet valve has a better hemodynamic influence than tilting disk valve in on patients with replacement of mitral valve.

结论双叶机械瓣对二尖瓣置换术患者的血流动力学影响优于倾斜碟瓣。

10·Said diameter plate composed of two pieces is installed in the slot on inner side of compasses' disk. The slide valve and turning handle are on the diameter plate for drawing circle precisely.

圆规盘内侧壁设计了直径片转动槽，直径片分两片组装进入转动槽，直径片上设计有滑动阀与转动柄，从而达到精确划圆的目的。