不朽情缘

??????????????????????????????????????????????????|????????????(304)|????????|???????????????????????????????
???????

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

?硡????0635??2189598

???????13396220692??17862525099??17862512888??18963580692

?????2418524989@qq.com

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

??????????????и??????????????66??

??????λ??? ?? ? >> ??????

12??31?????????溆驻?????÷????????????????????????

?????????2014/12/31
???????????????????????
?????1517

12??31?????????溆驻?????÷????????????????????????

?????·?????????????????<br><br>??·????????????????????????10??2000??8000  76??<BR>10??2000??8000  70??<BR>4??1500??8000  21??<BR>10??2000??8000  70??<BR>4??1500??800035??<BR>4??1500??8000  80??<BR>8??1800??8000  70??<br><br>??·???????????????????????????????????????????????????????????λ????? kg ???????????????W ???????? kg ?? = F ?????

?????·?????????????????



??·????????????????????????

10??2000??8000 76??
10??2000??8000 70??
4??1500??8000 21??
10??2000??8000 70??
4??1500??800035??
4??1500??8000 80??
8??1800??8000 70??

??·????????????????????????

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

?????????????????????λ????? kg ???????????????

W ???????? kg ?? = F ??????? mm2 ???? L ??????? m ??????????? g/cm3 ???? 1/1000

????????? 7.85g/cm3
??壨kg/m2??W= 7.85 ??d       d= ??       

??? 4mm ???壬???m2 ???????m2 ????=7.85 ??4=31.4kg





12??31?????????溆驻???????????????????????????????????

  • ?????????? ????????500???????????????16Mnq?????????200?????????????
  • ?????????? ???????????201???????????????????????ú?????????????
  • ???????????

    • ??????? /CONTACT

    ??????????????????
    ?硡????0635??2189598
    ???????13396220692??17862525099??17862512888??18963580692
    ??????????????????
    ?????2418524989@qq.com
    ??????????????и??????????????66??
  • ewm
    • ewm2

    ?????????????????
    COPYRIGHT ??????????????????   ????????ICP??2021038300??   ???????????????

    ????

    ??????

    • ?????13396220692
    • ?????17862525099
    • ?????17862512888
    • ????????
    【网站地图】