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??? ????? ?? ????? ??????? ??????? ???? ???? ?? ??? ??????? ?? ???? ????? ???? ???? 800 ???? ????? ??? ????? ??????? ????? ????? ????? ??????? ??????? ??? 0.5? -1?.

1. ???? ??????

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??? ?????? ???? 杏吧论坛 ?????? ?????? ?????? ?????? ???? ?????? ????? ??? ???? ?? 40 ????? ?? ?????? ?? ???? ????? ?????????? ???????.

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????????? ?????? ?????? ?? ?????? ????????? ???????:

?????????/? (????? × ?????)	?????? (??/????)	???? ???? ????? ?????? ?????? (???? ?????)
Φ1.2×8.0	1.9–2.4	700–800
Φ2.2×12	9.7–12.2	700–800
Φ2.4×22	21.2–26.5	700–800
Φ3.6×28	60.8–76.0	700–800

????/????? ???? ????????? ???????

????? ???? ????? ????????? ????? ????? ???? ???? ????? ?????? ???????? ????? ???????? ???? ?????????? ????? ??? ??????? ????? ??????? ????? ?????? ????? ?????? ???????. ??? ??? ??? ??????? ???????? ?? ??? ???? ?? ???.

????? ?????? ????? ??????? ????????? ??????? ?? 杏吧论坛

drum body

1. ??? ??????

?????? ??????? ??????? ??????? ????? ??????? ??????? ????? ?????? ??????? ??????? ?????? ???? ????.

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2. ???? ??? ?????? ????? ???????

???? ??? ?????? ???? ?????? ?????? ?????? ???? ??????? ??? ???? ???? ??????? ?????? ?? ???? ??????.

????? ??? ??? ?????? ??? ????? ??? ?????? ?? ???????? ?????????? ??? ???? ??????? ???????? ????? ??????? ????? ???? 20%.

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3. ???? ??????

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4. ?????? ????????

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????? ????? ?????? ????????? ??????? ?? 杏吧论坛?

????? ????? ?????: ????? ?????? ??? ??? 80% ?? ???? ???? ?? ????? ??????? ????? ???????.
?????? ?? ????? ???????: ???? ????? ??????? ??? ????? ?????? ??????? ???? ???? ???? ?????? ?? ???????? ???????.
?????? ????? ???????: ????? ????? ?? ???? ????? ????? ??? ??? 1.9-76 ??/????.
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???? ??????? ????? ????? ????? ?????? ????? ????? ??? ?????? (????? ???????) ???? ??????? ??? ???? ??? ??????? ??? ?????? ??????.

?? ???? ?????? ?????? ?? ?????????? ?????? ???? ????? ?? ??? ?????? ????? ?? ???? ???????? ???? ?????? ??? ?????? ?? ??? ???????. ??????? ?????? ???? ???? ???? ???? ??????? ?????? ???????? ?? ?????.

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1. ?? ??? ?????? ???? ??????? ???? ??????????

????? ?? ?????? ?????? ????????? ?????? ?????? ????? ?????? ??? ??? ???????? ???? ????????. ??? ????? ???????? ??? 5000 ???? ??????/???. ??????? ????? ???????? ???? ????? ?? ????? ???????? ?????? ????? ?????? ??????? ????? ?????? ??? ???????.
???? ????? ???? ??????? ??????? ????????? ??? ????? ??????? ?????? ?????? ???? ?????? ????? ?????? ???? ????? 8500 ???? ??????/??? ????. ????? ????? ?????? ?????? ????? ????? ???? ?????? ??? ?? ?????? ????????? ???? ?????? ?? ?????? ?????? ???????? ??? ???? ????????.
???? ?????? ???????? ???? ????? ?? ??????? ?? ??????? ???????? ????? ?? ???? ??? ????? ??? ????? ????? ??????? ????. ?????? ????? ???????? ??? 3000 ?4500 ???? ??????/????????. ?????? ???? ????? ?? ?????? ??????? ?????? ???? ?????? ??? ????? ??? ???? ????????.

2. ????? ?????? ?????? ??????? ????? ????????? ????????

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3. ??? ????? ???? ????????? ??????? ?? ????? ???????

?????? ???????? ??????? ???????? ?? ??????? ?????? ???? ??????? ??????.
?. ??? ???????: ??????? ?????? ??????? ??? ???? ????????? ??????? (800 ???? ???????? - 1400 ???? ????????) ?? ?????? ??????. ??????? ????????? ?????????? ?? ?????? ?????? ??? ??????? ??????? ???????. ????? ????? ??????? ??????? ??? ????? ?? ????? ????? ???? (1000 ???? ???????? - 3000 ???? ????????).
?. ???????: ??????? ????? ????? ??????? ????? ?????? ???? ?????? ?????? ????????. ??? ????? ????? ??? ??????? ????????? ??????? ??? ??? ????? ??????? ????? ?????? ?? ????? ?????? ?????? ??????? ??????? ?????? ???? ??????? ????????.