例句與造句

1. The numerical methods utilized in solving the set of mathematical equations involve calculating the spatial rate of change of variables , which means a priori grid point value information along the boundary outside the model domain has to be separately provided to set up time - dependent boundary conditions for computing the governing equations
   ：計算有關(guān)數(shù)學(xué)方程組的數(shù)值方法，牽涉到變數(shù)在空間的分布變化，故此亦需要另外提供模式范圍以外的網(wǎng)格點值，從而按時間設(shè)定邊界條件，以完成基本方程組的運算。
2. It's difficult to find time-dependent boundary condition in a sentence. 用time-dependent boundary condition造句挺難的