After deeply analyzing sniff mode which is a low power operation mode of bluetooth, a learning function is proposed to approximate the distribution of the incoming traffic at a master-slave pair.

在深入分析蓝牙的低功耗工作模式一呼吸模式基础上，提出用学习函数来近似估计主从对之间通信流分布。

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By using perturbation mode, we study the free falling eastward body, and present the first approximate calculation formula of the rotation angular velocity of the earth.

应用微扰论的方法对落体偏东进行研究，给出了在地球自转角速度一级近似下的计算公式。

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The approximate numerical method to deal with the coupled mode equations is presented in detail and the rationality of the method is given.

详细地给出耦合模方程近似处理的方法，并说明了其合理性。

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