unknown term

• 未知项

unknown term的用法和样例：

例句

1. The transient term is discretized by difference method and the spatial derivatives are employed by the DQM with equal spacing and non-equal spacing of sampling points.
   将权重系数与热源为已知项，热传导系数为未知项，整理统御方程式后，以矩阵方式排列，以逆算矩阵，求得解答。