Contact us
Choose a category below so we can get back to you as quickly as possible.
是標量 變化率=變化量/時間,向量的變化量是向量,但變化率是指變化的快慢,“快慢”是沒有方向的(注意區分噢) 你也可以將動量變化率和速率進行對比記憶(速率是標量)
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.