????:1???????????:????300?3??????

2????????????

3?????????????

4?????mm

5??????????

11???????????????25????,???????????????,?(?“?????????????????”)????????????8???,??

???,??????6225?,???,?????????????,???141???+328??????????+141????????,??328????????????????????????,?????????????,?????350????,????8??117.5??,?????????

?????“?”???,???,?????????????????????????????????????????????????,???????????????????477????,???????????350?????(?? ??? ????? ????????????????)

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