you mean spiral patterns? Spiral patterns are

來源: 9$ 於 2012-10-14 08:04:29 [] [博客] [舊帖] [給我悄悄話] 閱讀數 : (136 bytes)

the disturbance to rational body structure.

see: Google search:   Rational Galaxy Structure and its Disturbance

請您先登陸，再發跟帖！