?? > ???? > ??

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

????:2024-11-23 22:40:51 ??:????

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

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

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

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

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

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

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

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

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

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

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

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

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

????

  • ????
  • ????