রেফারেন্স পুস্তিকা
Seecive Coor ( )
G
➜
N
1 Seecive coor ( )
Seecive coor
( )
2 p
2 g
g (
g ,
X ) J
g
3
E (N/L)
(
m
k
; m
k )
, X W (Q)
E
(
N
/
L
)
217
U