Formulae on the base vectors and the coordinate variables derivative going with fluid particle and their application;
因为标量与坐标系无关，故两个矢量的点积称为标量不变量。
Say, polar coordinates. Let's say that I have a function but is defined in terms of the polar coordinate variables on theta.
比如说极坐标，有一个函数,是根据极坐标θ定义的。
We are finding a parametric equation for the sphere using two variables phi and theta which happen to be part of the spherical coordinate system.
我们建立有两个变量φ和θ的球面的参数方程,它们恰好是,球坐标系统的一部分。
应用推荐