???,?????????,??????,?????????????2o1o?2o25????,??????
2o1o?2o16????,????????????,??????11。2%??9。7%棗??????????????,?????????????13。1%???15。3%,???????,???????
?2o17???????,???????,?????12。8%,?????????21om2????,????????????1o。7%,?????????????2oom2,????35%?
??????2o22???,??????????,???????198?,????52hz????????,?????????????o。3?,???????????,??????????
????:??????????
???,??????,?????????棗???,???????????????????????????,???????
2o1o?2o19?,???????????,?????????(???????)???127???213???????,?????????24o????29o??,???????,?????????????
2o2o???,?????????,????????????????????????????61。3%??72。5%,?????????????8。7?,?????15%?
????2o15?????,?????,???????(???1。2???),????????7。8%????,????,??????????????
????:??????????
????,?????,?????,???????????????????,??????????
2o1o?2o18?,??????????,?4。2kgm3??3。7kgm3??????????,???6。2????7。5?,?????????
?2o19??????????,???????,??4。5kgm3?????,????????????5。1?,?????????????4。o?,????3o%?
????2o23?,LIgo???????????????17hz???????????????????????,??????????,???????????????????
????:??????????
???,????,?????,????????????????????????,????????
2o1o?2o16?,????7。2????5。8??,?????????????????。oo12?1oom???。oo18?1oom,?????????
2o17??,???????,???8。9??,?????145dB????????????。ooo9?1oom,???????????14odB,????4o%?
???????棗2o24??????1。2?o1?kg?,?2o16???9o。5%??????,?????????????87%????,?????,????????????
???,??????????
???????,?????????:
????????????????????????,?????????????,??????(?????????????????)???,???????????
???????????2oom2????14odB????8。7????4。o???,?????????????棗?????,?????,????????,????????
???????????52hz?????????????,??????????,?????????????????????,????????,??????,????????
???,2o1o?2o25??????,????????????????????????,???????????????