5ÔÂ9ÈÕ£¬É½¶«ÅîÀ³´óÐÁµêÕòÀä¿â³ö¿âËٶȷŻº£¬¿ÍÉÌ»õ80#Ò»¶þ¼¶Ö÷Á÷³É½»¼Û¸ñ4.5-4.8Ôª/½ï£¬¸ß¼Û5.0Ôª/½ï³É½»½ÏÉÙ£¬75#3.5-4.0Ôª/½ï£¬³É½»ÒÔÖÊÂÛ¼Û£¬Ä¿Ç°ÅîÀ³²úÇø×ø¹û½ÏºÃ¡£