????:1?????:??????

2?????

3???????

4??????????

5?????????????

??????????7?????????1??????????????????? (???????????? ????????)??????????????7??1?????????????(??????????????)?????????????,????????????(Radon,Rn)???,??,?????????????????????????????????“?”?

??4?????????????????????????,?????????,??????????????????????,?222??220???????5.3????????????8.8??????????????????(a)?????,??????????????????????????

????????????/?

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

????,?,5?6????32.7???????????,?10???????????????,?????????????????????,?????????;5??????17??????,??????5????????????????10??11???,?????????,???????????????????????,?????32????????????????,???????????????????????????????16?????????????????,???????????????????,??,????????

??,?????????????????5?????23?,??????????????111???????????;6?????????????????????2????????,??,????????????????????,???????????,?????6?????????????????????4?,???????????????????????????

?????????????????????????????????????????????????????/?????????????

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

?,?2019??????????????????6????????????,????,??????(Pierre-Yves Meslin)???????????????????????????????(King Wah Wong)????????????????(Aurélie Moussi);????????????????????????????????????????????,???(?)

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