曲面方程式:
[math](1-s)\cdot r(\cos t,0,\sin t) + s \cdot r(\cos (\pi + t), \sin (\pi +t), 0)[/math]
- Target Group (Age)
- 19+
- 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.