covariant tensor

例句：

1. 1. Inthe study of electromagnetic fields, covariant tensors are used to describethe transformation of vectors under different coordinatesystems.
   在电磁场研究中，使用协变张量来描述向量在不同坐标系下的变换。
2. 2. The covariant tensor isa fundamental concept in differential geometry,which allows us to understand the behavior ofobjects under different forces and torsions.
   协变张量是微分几何学中的基本概念，它允许我们理解物体在不同力和扭矩作用下的行为。
3. 3. Incomputer graphics, the covariant tensoris used to calculate the transformation of pointsbetween two views.
   在计算机图形学中，协变张量用于计算两个视图之间点的变换。