²ÄÐÔÓÃ;£º Æø¸ÉÃܶȣº0.95~1.23g/cm3£¬ÖØÓ²»òÉõÖØÓ²£¬ÓÐ"ÃåµéÌúľ"Ö®³Æ£¬ÎÆÀí½»´í¡¢Æø¸É×´¿öÁ¼ºÃ¡¢ÐIJÄÉõÄ;ᢲÄɫƫºì£¬´øÉîÉ«ÌõÎÆÏß¡¢×ÔÈ»ÃÀ¹Û¡¢½á¹¹Ï¸Äå¡£ÊÊÓÃÓÚ³µ´¬¡¢¸ß¼¶ÓÅÖʼҾߡ¢µØ°å¡¢ÎݼܵÄÀíÏëÓòġ£ µÄÀíÏëÓòġ£