??

???????????????????
??????@??????@???????@?????@??????????????????@????????????????????????
??????????????????????
??????????????????????????????????????????????????@????????
------------
(??? )

?

?

????? ,????? ,????? ,??????? ,?????

?? ,?????? ,???? ,???? ,??@? ,?? ,???????

? ,??? ...

?????? ???------???????????????????????????????????????????? ??????????????????300?100??100??200?100??100??60?100??80?????????????? ?????????????~???100?60?????60??60?????50???100?100??100? ?????????????????????40cm18cm8~10cm???????? ????????------?? ???
???????,??,????????,?,??????????.2-3??,...

??????????????????????????????????????
?????????????????????????????????????????????
??
????????????????????????????????
????????35??????????????
?OL??3?
1?????
2??
3?????????????

??????
????

?????????????@?
???
??????

??????????

???
???????50???21?22?????

????????????????
???????????
1???????6???6??????23??
2????????????????? ?????????????????3???
3??????3???????
4?@??????????1012??T?12????
5????????????????????12????????
6????????????????15???5????????
????????????? ??????????????????? ??????@??????@???????@?????@??...