µØÇø²ÄÖÊƷλ¼Ó¹¤·Ñ¾ù¼Û£¨Ôª/½ðÊô¶Ö£©±¸×¢ÄÚÃɹÅPb50%500-700600µ½³§¼ÛÔÆÄÏPb50%500-700600µ½³§¼ÛºþÄÏPb50%400-600500µ½³§¼Û¹ãÎ÷Pb50%500-700600µ½³§¼ÛºÓÄÏPb50%500-700600µ½³§¼ÛÇຣPb50%600-800700µ½³§¼ÛµØÇø²ÄÖÊƷλ¼Ó¹¤·Ñ¾ù¼Û£¨ÃÀÔª/¸É¶Ö£©±¸×¢Ö÷Òª¸Û¿ÚPb60%20-4030½ø¿ÚT