According to the law of industry gradient transfer of districts, the extensive triangle district has the good conditions of industry gradient transfer.
根据区域产业梯度转移规律，泛珠三角各省区现在已基本具备了产业梯度转移的各项条件。
2
In this paper, the cosine law of general closed planar broken line is acquired by generalizing cosine law of triangle.
将三角形中的余弦定律进行推广，得到一般平面封闭折线的余弦定律。
3
The absolute velocity was decomposed based on the law of velocity triangle, the absolute tangential velocity, the relative velocity and the relative tangential velocity were presented in this paper.