4ÔÂ20ÈÕ£¬ºÚÁú½­Ê¡´óÇìÊÐÁÖµéÏØóÒ×É̱¨ÕäÖéºìС¶¹³ö»õ²Î¿¼¼Û7.8-7.9Ôª/½ï£¬Êг¡¸ÕÐ豸»õ£¬¼Û¸ñ·½ÃæÔÝÎÈÔËÐС£