1ÔÂ22ÈÕ£¬ÉÂÎ÷¸»ÏزúÇø´º½Ú±¸»õ·ÕΧһ°ã£¬¿ÍÉ̶àÒÔ·¢×Ô´æ»õԴΪÖ÷£¬¹ûÅ©»õÉÙÁ¿½»Ò×¼Û¸ñÆ«Èõ£¬70#ÒÔÉϹûũͨ»õÖ÷Á÷¼Û¸ñ3.0-3.3Ôª/½ï£¬75#¹ûũͨ»õ2.6-2.7Ôª/½ï£¬¿´»õ¶¨¼Û¡£