本实用 新型转子啮合平稳，磨损小，密封性好，便于加工和检测，振动小， 噪音低，压缩机效率高。

The rotor has the characteristics of stable meshing, less abrasion, good sealing property, convenient processing as well as detecting, weak vibration, low noise and high efficiency of the compressor.

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同时，由于停车缴费造成的车辆频繁制动引起的机械磨损、油耗、噪音和由此产生的大量有害尾气等问题，使得开发与研究不停车收费系统成为我国公路交通的迫切需要。

Therefore, the use of non-cash payment of tolls and the advanced electronic technology can make the vehicles pass the toll station more quickly. It's the urgent need for the traffic in our country.

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