?? ?????????????:7????????
????:1????????????:??95?
2????????
3?2020?????????????
4????????SPA??
5?????????
??????????????????8??????7?(?? ?????????)??,7??????,???????????,7?2???,??20000??(???????4??????),?????????????2.2??(?????????????1.58??????????)?
??????8????????7?????????“Geological evidence reveals a staircase pattern in Earth’s rotational deceleration evolution(??)”???«?????»(PNAS)?????????
??????????????,????????????????????,????????????????
???????????????????????????????????????,???????????????????????,??????????????????????????????
????????????,???????????Jacques Laskar?????????????2??????????????,???????????????????????????????????????7????????????2?????????????,????????????????????????,????????
????????????,??7??????????????????????????2????????,?????????
???,?????????????????????????????,?????????????????????,???
???,?????????????????(?) ???:??????????????????????????????????