Can't you answer my question?

来源: 于 2014-11-04 11:02:03 [旧帖] [给我悄悄话] 本文已被阅读：次

• LOL, show me an aerodynamic drag example w/o friction then! - 应犹在- - ♂ 给 应犹在- 发送悄悄话 应犹在- 的个人群组 (72 bytes) (4 reads) 11/04/2014  09:23:11