6ÔÂ21ÈÕ£¬É½¶«ÇൺƷƷºÃÓÐÏÞ¹«Ë¾£ºµ°°×>44£¬Ë®·Ö<12£¬»Ò·Ö<8£¬»ÆÇúù<80PPB£¬±¨¼Û×ÔÌá4250Ôª/¶Ö£¬Á¿´óÒé¼Û¡£