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7.???????????????????????????????????????????????????????????????????????? 8.????????????????????????????
9.????????????????????????????????????????????????????????????????????????????????????1mm?
10.????????????11??11.5???????????1/4??????????9??9.5????????????18?20?32?32????
11.????????????????????????????100??65?????90??80?????????????????R????????????
12.????????????????????????????150;?????4T,????12T?8T,?????6T?8T?????2T,???4T?????4T?
