:

1.

2.

1

2

3.

50%

1 . 10% 20% 12%15%25%30%55%65%

1/21/3

ABCD

2.

30%40%30%

35911

1.25%10%2.100

3. 4.5.6. 7.

1.

2.

3.

4. 300Hz300KHz300GHz,

19797175.7cm20007174.4cm

,