18.

:

(06)

^)

:

312(4)

32(4)

2(12)(4)(31207)0()

10 1482 (4 )5 ( )2 (0)4

3 (1 09)

(, )4 (1,31)2 (312 )3 (1,304)

MgAl204

302

204

32

32

()

(7,)3

(.)

(4)()

(23^08)

8(13110)()2

, . . , -, , .


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