???????????-bt游戏平台

????????pvc?6????????????????(????)?2?????(????)??,??????,?????

??????????????????:??????(9m)???????????????????,??????????,????????,???????(9m)?????????????????????,???????????????????????????????????5?????????6?

???30cm??????;?????f50?f30???????,?f50??,??1~2?f30?????????????????????????????

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

??????????????????????,??????????????????1m/?,??????2.5m?,??????;??????3m?,????????,???????3m/?;???????f16?????,????????pvc??7????????????????(????)

??????????????????2?grc???????????????;???????????????????????????????????

????????????????“?”???,????????????4??????????????????????????,?????

4.2????????????????????,???????????????????????????,??????????????,???????????,?????,????????10x10x10cm??????????????4.3 ?????????????????????,???????,

?????????????,??????????????75??????????????120???????,???????????,???????