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Ҏ(gu��)������ 20-30mm
��϶�� 65%
�ȱ���e 1.2 m2/g
���폊(qi��ng)�� 1000kg/cm2
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�ɷ� �F ̼ ����
���Y(ji��)�ض� 1150-1300�z�϶�
