????:1????????V:??????

2??????

3?????????

4??????????

5??????????

?,???????,?????19?8??,????????????(????187.2?)?????3.61???????,?????????????????????(?146.0????)???????????????????????(??210.5????)????0.42~0.77?????,????????1?,????

??3???????????25???????????

?(??????????????146.0???????????????)?????????????(???????99.5?)????????????2~3????;

???(187.2??)4??;

??????(?150.5?????????????????)?0.5~1?????????????;

????????(155.6?)??????????????(139.0????)?????????????(139.0??????????)????0.5~2?????;

??

?????????????????????,????20???

?????6????19??8??30??,????????????????????????????????????????????????????????????????????????????(???????)????????,????????(?? ?????) ??????????????:?????