2ÔÂ7ÈÕ£¬ÉÂÎ÷Âå´¨²úÇø¹ûÅ©»õ½»Ò×»ù±¾ÔÝÍ££¬70#ÒÔÉÏͳ»õ2.8-3.3Ôª/½ï£¬70#ÒÔÉÏ°ëÉÌÆ·3.5-3.8Ôª/½ï£¬¿âÄڸߴÎ1.5-2.3Ôª/½ï£¬70-75#ϼñÖ÷Á÷1.6-2.0Ôª/½ï£¬¿´»õ¶¨¼Û¡£ÁÙ½ü´º½Ú£¬½µÑ©ÌìÆøÓ°Ïì·¢ÔË£¬ÒÑ°ü×°»õÔ´°´Ðè·¢»õ£¬¿âÄÚаü×°¹¤×÷ÒѽÐøÔÝÍ£¡£