????: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);??????????????????,??(???????????????)

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