Contact us
Choose a category below so we can get back to you as quickly as possible.
一、有關概念 1.分向量 既有大小又有方向的量叫做向量,或稱為向量.把向量分解在不同的方向上,得到的分量就叫做分向量
We and our partners use cookies and other technologies to analyze traffic and optimize your experience. View more info and control your cookies settings at any time in our Cookies Policy.