如果两个节点的距离比原点和离原点最远节点之间距离的0.01%大，则认为两个节点具有非一致性。
The two nodes in the spring are considered non-coincident if the distance between them is more than 0.01 percent of the distance between the origin and the node farthest from the origin.
首先用等间距步长将距离和时间分为一系列的离 散节点。
Firstly, the distance and time are divided into a series of discrete nodes with evenly spaced increments.
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