As the rotor of rotation, the translation of the vortex each compression interior volume change constantly, realize the gas sucked and compression.
随着涡旋转子的平移转动，各压缩室内容积不断发生变化，实现对气体的吸人与压缩。
2
An approximate expression of the volume of body of rotation together with its error estimation is derived on the basis of theory of numbers.
本文用数论方法推导出一个计算旋转体体积的近似公式，并给出该近似公式的误差估计。
3
Compression process: with the rotor rotation, compression chamber volume decreases, the gas compressed with the compression chamber until the exhaust port to the forefront.