????DB31/T599-2012??????е???????????????????????????????????????????????????????о?????????????????????н??????????Э??????????2012??10??1????????
?????????Χ??“??????????????????????巋λ??????????????200?楨????伱?????????????????”???????????????????????MU7.5??MU10.0??????????????????B10??≤1000kg/m3????B13??≤1300kg/m3??????????????н??????????????????????
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