??? ?????? 28? ?? ??? ????????? ???? ??? ?? ??. 29??? ??? ???? ????? ????? ?? ?? ??? ????? ??? ??? ????. 30??? ???? ?? ???? ?? ???? ?? ??? ??? 120mm ??, ???? ??? ??? 30～80mm, ????? 20～60mm, ?? ? ???? ? ?? ????? 5～20mm?.
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