4ÔÂ6ÈÕ£¬ºÓ±±ÕżҿÚijÁ¸ÓÍÉ̱¨Ð¡Ã÷ÂÌÑ¿¶¹³ö»õ²Î¿¼¼Û7.2Ôª/½ï£¬ÉÌÆ·Â̶¹³ö»õ²Î¿¼¼Û4.5Ôª/½ï£¬Ä¿Ç°Ñ¿¶¹×ß»õƽÎÈ£¬ÉÌÆ·Â̶¹ÐèÇóÂÔÓÐÆðÉ«¡£