17111| 2
|
[转载] 光反射问题 |
发表于 2015-5-15 22:22:07
|
显示全部楼层
点评
如果是反射3次呢
| ||
毋因群疑而阻独见 毋任己意而废人言
毋私小惠而伤大体 毋借公论以快私情 |
||
小黑屋|手机版|数学研发网 ( 苏ICP备07505100号 )
GMT+8, 2024-11-22 15:58 , Processed in 0.025001 second(s), 21 queries .
Powered by Discuz! X3.5
© 2001-2024 Discuz! Team.