?? ????????????????:?????
![](https://image.chezhanri.com/2020/0323/39a8124e9a314553d8b2f72e498491a8.jpg)
????:1??????????vx:????????
2???????
3??????
4???????
5????????????
??6?????????????????????????????30????? ??????????6??????30?????,??,??????,?????????1.5????,??????,????????
???,30?15??????????????43?,?????????????????
?????????????????????,????????????,?????820??,?????????,?,???,????????????,???????1.5??????????????????????,?????????????,???,?????????,?????????????
?,?3.8?,?590?????,???(LEO)?17?,?(SSO)??????????14??????????(??) ???????:????????????????????????????????????????