????????6??????????19?? (?????? ???)??????????????????????????6????????19????????????

??????????? ???

?:???,???????,????????,??

??:??????????,???????????????,?????????????????????,????????????????,?,???????????????????,??????????????,??,?????????????????

??????????????,????????,?????????,???(??)

????????????:????????????? ??“???????”

?? ???????????????????:???

????:1????????:????vx

2???????????

3????

4?????

5????????

????????6??????????19?? (?????? ???)??????????????????????????6????????19????????????

??????????? ???

?:???,???????,????????,??

??:??????????,???????????????,?????????????????????,????????????????,?,???????????????????,??????????????,??,?????????????????

??????????????,????????,?????????,???(??)

????????????:?????????????