????:2024-11-24 01:29:05 ??:????
????:????????:300??
???????11????23??(???????? ????????)11????23??????????,“????”????????,???????
???????????????????????? ????????????,????????????,???????????????????????????????????????????????????????????????????????????????????30????80????????????,????????????????,???????
??????,??????????????????????????;??????????,??«GB/T23776??????»???,??5??????????????5????????
????????????????? ???????????????????,???,????????????????????,???????(????)??,??????????,???????????????
??,??,????,????????????????????????,??????????????????????????????????
??,??“?????”????,????,??????????????????????,??«????????»«??????????????????»«??»????
????????????????????????????????????? ???????????“?????????????????????????????,???????????????”????,??????????,??????????,????????????????????????????,??;?????????????????????????????????,?????,??????????
??????,????,?“??????”????,?????????,“????????”????“??”?????????????????39.2?????????????????,????120?????????,????????????????2??????,90%????????????,75%?????“??????”??54.76????,??????????(??????????)
??:???????????????