使小圓緊貼著大圓的內部滾動，此時小圓上一定點所形成的軌跡稱為內擺線（hypocycloid）。
陳科旭
—
- Target Group (Age)
- 15 – 18
- Language
- Chinese Traditional / 繁體中文
Error
A timeout occurred. Trying to re-save …
Sorry, but the server is not responding. Please wait a few minutes and then try to save again.
