cpcheung5 作品

球体的截面：动态几何演示

2017-10-22 19:43

圆锥截面 by C.P. Cheung

2017-10-22 19:15

棱锥的截面 by C.P. Cheung

2017-10-22 18:51

长方体的截面 by C.P. Cheung

2017-10-22 18:13