
 19Ϣݡ籨𣬱й⳵;ȳнͨӪ˳ͳһĳݳò淶ŴϲճĤɫĤգϺнͨ͸ۿڹ״ηӪ˳ݳò淶У¼ơ淶Ӫ˳ۡڻȫ豸ͿװȶҪ
ָڳ8cm
ͷ
ڿ˳棬淶Ҫָ࣬ڳ滮8cmͷնѻ͵糵ʡʿ˳60cm230cm2ָڳϻ10cmͷնѻӾãѺָۣ3cmͷնѻ
ڻ棬淶Ҫμƽ࣬λ䡢5cm2ڽ̲ͨ硣ڱδ׼Ｐкۡ԰塢⡢۹͹޻ҡĵ粣޹ڵȳ֤ѽɵ֤ռ
ʩ棬ҪõĹ𻵡ɫƵ߱ڼܣáͬɫͬϡͬʽ5cm2

۹޻
ͬʱ͵糵Ͷ䡢صʾ豸á޻ҡ۹ָ˼ֻװι̣޻ҡ۹ʾͨӡ·ʱʾ׼ȷķٰ͸޻Ŀ˿֪ҵơͶߵ绰ּͨƼʱʾ׼ȷ豸ȫ棬ͼϵͳ豸װι̡޻ңЧ޻ңȱʧ漰Ϳװ棬治ڵʶ·ơල绰ʾͿװΥΥϢӰݻȫгʡʿ˳װͼϵͳ޹棬ƵŹռĿܲʱ䲻5%棬GB7258Ĺ涨Ӫ˳װȣβŷԺ̼ɼ

