The method has the advantages, over the graphic methods available at home or abroad, of simplicity in drawing, regularity of lines drawn and convenience in use.

它比国内外现有的图解法具有制图简单、图线规则、使用方便的优点。

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Based on momentum balance and the law of momentum conservation, two new graphic methods are developed to determine the pre-impact vehicle momentum or collision speed in this paper.

本文根据动量平衡和动量守恒定律的基本原理，提出了两种推算碰撞前汽车动量或碰撞速度的图解方法。

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At last the graphic methods for the problems are given.

最后给出了几何图解方法。

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