The thesis describes some solutions for the slow convergence (count to infinite) problem in Vector-Distance algorithm in TCP/IP and points some shortages of them.

论述了TCP/IP网络中距离向量（V D）算法中的慢收敛问题，以及一些解决方法的不足。

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The distance ratio iteration method is a new fractal rendering method which can construct complex inner structure in the convergence region of complex mapping.

距离比值迭代方法是一种新的分形绘制方法，可以在复映射收敛区域绘制出复杂的自相似结构。

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The lag distance of abutment pressure behind working face increases, but the convergence coefficient of vertical stress doesn't change obviously with the increase of mining height.

分层开采与综放开采工作面滞后支承压力变化规律是，随着采高的增大，工作面滞后支承力的距离加大，垂直应力集中系数差别不大。

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Another reason for the world to keep its distance from this manipulative bunch is that the convergence of interests of consumers and producers is just a mirage.

ECONOMIST: Mission impossible