2ÔÂ2ÈÕ£¬»ÆÁê²úÇø¹ûÅ©»õ¼Û¸ñÔÝÎÈ£¬70#ÒÔÉϹûũͨ»õÖ÷Á÷¼Û¸ñ2.8-3.2Ôª/½ï£¬70#ÒÔÉϹûÅ©ºÃ»õ3.3-3.5Ôª/½ï£¬¿âÄڸߴÎ1.5-2.5Ôª/½ï£¬¿´»õ¶¨¼Û¡£¸ßËÙ·¿ÚÏÂÎç2µãµ½4µã¿ª·Å£¬´óÑ©ÌìÆøÓ°Ï콻ͨ£¬²úµØ·¢»õËٶȻºÂý¡£