??????????????????

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

?????????????????11???????23?(? ??????)11??23????,“??????”????,?????????

????????????? ??????

???,?????,??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????30??????80????,??,??????????????

??,??????????????????????;?????????,????«GB/T23776??»??????????????????,?????????????5??????????????????????5?????????

????????? ?????????

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

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

???????,????“?????”????,?,???????,??????????«?????????»«???????????????»«????»??????????????????

?????????????????? ???????????

“?????????????????????,???????????????”???????????????????????,??????????,?????????,????????????????????,??;?????????????????????,??????,????

??,???,?????“???????????????”??????,????????????,“????????”???????“????”???????39.2??????,??120????,????????????2???????????,90%??????,75%???“????”??????????54.76??,????????(??????????????)

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