有心二次曲面

central projection

中心射影

central processing unit 中央处理器 | central projection 中心射影 | central quadric 有心二次曲面

central quadric

有心二次曲面

central projection 中心射影 | central quadric 有心二次曲面 | central series 中心群列

central quadric surfase

有心二次曲面

1405,"central projection","中心射影" | 1406,"central quadric surfase","有心二次曲面" | 1407,"central ray","中心射线"

central quadric hypersurface

有心二次超曲面

central processor | 中央处理器 | central quadric hypersurface | 有心二次超曲面 | central quadric surface | 有心二次面

central quadric surface

有心二次面

central quadric hypersurface | 有心二次超曲面 | central quadric surface | 有心二次面 | central radio laboratory | 中央无线电实验室

central series

中心群列

central quadric 有心二次曲面 | central series 中心群列 | central symmetric vector field 中心对称向量场

overturned：倒转的

倒转的 inverted | 倒转的 overturned | 倒转点 inversion point

remind sb of/about sth：使某人想起

9. on the go 忙碌, (整天)奔忙 | remind sb. of / about sth. 使某人想起... | have fun 取乐