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1·When we set up the nodal equations, which is associated with ideal voltage sources, we can use an enclosed surface to encircle these nodes and think of it as a general node.

在列写与无伴电压源相关联的节点方程时，用一个封闭面把连接无伴电压源的节点包围起来，看做一个广义节点，其节点的方程与通常的节点法一样。

2·In this paper, is presented the technique of calculating the nodal values of the distributed contact forces on the contact surface from the nodal lumped contact forces.

本文建立了由节点集中接触力计算接触面上分布接触力节点值的方法，从而可顺利建立接触判据。

3·The complex surfaces on a sculpture was fitted with elliptic curves in sets based on the surface nodal points and the elliptic fitting algorithm was presented.

基于复杂型面的型值点，采用椭圆曲线法则，提出椭圆拟合算法，利用该算法来拟合石雕型面，得出雕像的椭圆曲线集合。