含双键或三键的基团 如何比顺序?
如图
书上写的我没看太明白
补上那些C站位 然后怎么比顺序呢?
pherob 2009-04-27 22:14
pherob 2009-04-27 22:14
pherob 2009-04-27 22:16
pherob 2009-04-27 22:22
pherob 2009-04-27 22:23
pherob 2009-04-27 22:24
Cattigrew 2009-04-27 22:26
pherob 2009-04-27 22:31
key_to_that 2009-04-27 22:42
pherob 2009-04-28 18:08