ÇëÎÊÓÐÅóÓÑÖªµÀ±¨Ö½Ó¡Ë¢ÖÊÁ¿¹ú±êÖУ¬¶ÔÓÚÓÍīʵµØÃܶÈÒªÇóY0.6-0.8,M0.9-1.0,C0.9-1.1,ºÚ1.0-1.15£¬ÕâЩֵÊÇÈ¥µ×µÄ£¨²â³öµÄÃܶÈÖµ-Ö½ÕÅÃܶȣ©£¬»¹ÊǾø¶ÔÖµÊýÖµ£¿

????????

Ò»°ãÕâÀàÊý¾ÝûÓÐ˵Ã÷µÄÓ¦¸ÃÊǾø¶ÔÊýÖµ