ÎÒµÄÅ©²úÆ·Íø21ÈÕÏûÏ¢£¬ºÓÄÏÖ£ÖÝÍò°îÁ¸ÓÍÊг¡Êܱ©ÓêÓ°Ï죬Êг¡Äڴ󲿷ֵêÆ̳öÏÖ½øË®Çé¿ö£¬Ä¿Ç°ÅÅË®´ëÊ©ÕýÔÚÊ©ÐУ¬Ë®ÃæÖð²½Ï½µ£¬Êг¡±¨¼ÛÔÝδ̫´ó²¨¶¯Ã»ÑÓÐøÇ°ÆÚ¼Û¸ñ¡£ÃåµéëÔÓ¶¹³ö»õ²Î¿¼¼Û4.1-4.2Ôª/½ï¡£