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3a(chn)ЧʸNʽ
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5(yng)÷VmöNVɽɏVˮxúl(f)늡ұИI(y)
6Ԅӻ̶ȸ̎ȾЧʸ늺Сa(chn)^鳣á
Nں˂y(tng)ζNʽCͷʽCcemеӲʯʯȡ200MPaԼ}40%ʯϡɌF(xin)һCһƣF(xin)һγҲڶ(ƿxø͵Č÷CõõwΠ)30~40%ͶYɱ