angle of gradient

例句：

1. 1. The angle of the slope is critical for determining the stability of the structure.
   坡度的角度对于确定结构的稳定性至关重要。
2. 2. The engineer used a computer program to calculate the angle of the gradient.
   工程师使用计算机程序来计算梯度的角度。
3. 3. The angle of the gradient can be used to predict the flow behavior in the fluid.
   梯度的角度可以用来预测流体中的流动行为。