???????????????????????????,???3??,????????,?????????,?????

??????8000??,?????2?????130??,??????3?????,???????300????????300??,?????30%??,????????????????????????????????,????????10??,??GB???????????????????????????????:??????????????????????

?????????????????,???????:1??????????????????????????????2?,??????????,????????????????????????????????????,????????????2???????????,?????(?????????)?????????????,???20???????????????????????,??????3??????????,??????????,25??100????????????????,????????????????????4??????????????????,???????????,????????4m,??25mm,??????????????????????????????,?????2???5?????????????,???????????????,????????????6??????????,???????????,?????,????????7?????????????,??????????????