Skin looks like nothing to alpha beam. Skin can't block alpha.
Skin looks like nothing to alpha beam.
所有跟帖:
•
對啊...皮膚擋alpha 射線? 記得著名的盧瑟福的背反射實驗嗎?
-季襄-
♂
(142 bytes)
()
03/18/2011 postreply
14:37:54