__________
. .________________
1
| 1 | |||||
| /3 | ´ | / | ´ | / | |
| 2 | |||
| 3 , d ( P=CU2wtgd) j ( ) | ||
| : | ||
| j+d=p/2 | j-d/2=p/2 |
| 4 | |||
| , | , |
| 5 | ||
| 6 | |||
| 20 / | 30 / | 40 / | 3000 / |
| 7 | ||
| 8 . | |||
| 9 . 50 ? | |||
| 10 ( ) | ||
2
| 1 | |||||
| /3 | 
| ´ | /2 | ||
| 2 | |||
| 3 , d ( P=CU2wtgd) j ( ) | ||
| : | ||
| j + d = p | j-d/2=p/2 |
| 4 | |||
| , | , |
| 5 | ||
| 6 | |||
| 30 / | 30 / | 30 / | 3000 / |
| 7 | ||
| 8 . | |||
| 9 . 50 ? | |||
| 10 ( ) | ||
3
|
|
|
