(M H = H O = H OMMM C = CO = CO . 2 . ( )121822 N G22 N GM N = V N...

44 .

(

m H = H O = H O

m

m C = CO = CO . 2 . ( )

12

18

22

n g

m N = V N = N m N = 14 46 . m NO

2

= 14 . n NO

2

( g )

)

.

28