Structure and realization of CAD system for the orbit-style sphere valve were described.
本文描述了轨道式球阀CAD系统的结构与实现。
The model experimental results show that the sphere valve can replace the hydraulic turbine under some conditions and it can satisfy the requirements for practical engineering of hydropower stations.
研究表明，在一定的条件下，利用球阀进行水电站水力过渡过程试验，完全能满足水电站实际工程的需要。
Pneumatic valve and plug valve of a type is the same, only it's shut down parts of a sphere, the sphere rotates around the body center line to achieve the opening and closing a valve.
气动球阀和旋塞阀是同属一个类型的阀门，只有它的关闭件是个球体，球体绕阀体中心线作旋转来达到开启、关闭的一种阀门。
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