1ÔÂ17ÈÕ£¬»ÆÁê²úÇø¿âÄÚ°ü×°ÓÐËù¼õÉÙ£¬¹ûÅ©»õ¼Û¸ñÔÝÎÈ£¬70#ÒÔÉϹûÅ©²î»õ2.7-3.0Ôª/½ï£¬Ò»°ã»õ3.0-3.3Ôª/½ï£¬70#ÒÔÉϹûÅ©ºÃ»õ3.3-3.5Ôª/½ï£¬¿âÄڸߴÎ1.8-2.5Ôª/½ï£¬¿´»õ¶¨¼Û¡£ÒÑ°ü×°»õԴ½Ðø·¢»õ£¬¹ûÅ©»õ¼Û¸ñÒÔÎÈΪÖ÷¡£