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在自动变速器的开发过程中，提出了边界点换挡规律，并对换挡规律的制定进行了研究，提出了新的方法。在此基础上制定了桑塔纳 ２０００ 机械式自动变速器（ Ａ Ｍ Ｔ）的换挡规律，并在实际跑车中得到检验，这对于 Ａ Ｍ Ｔ 的产品化和提高我国自动变速器的自主开发能力有重要的意义。
In the process of developing the automatic transmission, the shift rule of the boundary point is put forward. The establishment of the shift pattern is studied and a new method is put forward. On the basis of this, the shift rule of Santana 2000 mechanical automatic transmission (AMT) was developed and tested in the actual sports car, which is important for the product of AT & T and the improvement of the autonomous development ability of the automatic transmission in our country significance.