In accodance with kinetic energy theorem, this paper presents an angular mo- mentum theorem of velocity instantaneous centre axis. This theorem is a simple and convenient scalarequation.
从动能定理出发，推导出一个对速度瞬心轴的角动量定理，它是一个简便的标量方程。
2
This method is helpful for us to find the way of the analytic solution of scalar field equation.
他们的解析解法对我们寻求标量场方程的解析解有着重要的启发意义。
3
Taking scalar wave equation and tunnel effect for example, the similarity of fiber optics to quantum mechanics was shown.