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

???????????????????????2?????????????????????????????13???????? (? ?)??????????????????????????????(??)?????????13??????,±800??,????

?,??????????,???,????????26??

±800???????,??????2020??????6????????????????????????????????30?,??????????????????????????????5??????????????????????????,????????700??

?±200?±400?±600?±800???,?6?????????????1?????????1?±200??????????????????

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

??????????????????,???????,???????????????????2000???????,????????????????

“??”???(????????????????????????????)