normal vector and directional vector are used for solving space problems or linear problems 巧用法向量与方向量解决空间平面及直线问题
error could not avoid in this non-linear problem if design base on experience only 若仅以人工的经验处理这样一个非线性问题,势必带来很大的误差。
contact problems belong to typical non-linear problems, familiar and specially complicated problems in engineering 接触问题是工程实践中一类常见、复杂、典型的非线性问题。
the research of cellular automata traffic flow model has been concerned for its capability in dealing with non-linear problems 元胞自动机交通流模型的研究受到了广泛的关注。
with neural network, non-linear problem can be solved better, as a result, forecasting can accord well with practice even more 利用神经网络模型可以较好地求解非线性问题,因而使预测结果更符合实际。