                  ˮ·棩㼰ֵ
                             ʹ˵

1
 1 棩͡Ϊ½·Ļ棩㡱ʱͻ棩ṹ棩㿢ֵ
 
 2 棩͡Ϊ·ļ̲㡱ʱľ·ͼ̲ṹ·̲㿢ֵ

2Ϊû룬һµҪܣÿһУͣıǩʱޱǩʱΪı򣩣һɫıʾʾݰòֵȡֵΧԼǩʾġ·ƹ淶òйصݻԼòйص˵ȡʾкһݣ굥ñǩʱһڣʾ·ƹ淶òйصݻԼòйص˵ȣΪòṩ

3ԭʼ벹˵ڡϵͳ˵нܹݲ׸
 1 ڴϷ棩͡ѡťûɸѡһֻ棩͡

 2 涨½棩㡢̲ƽĲȡֵΧΪ[15]ıȷʱ·ť塰棩̲ƽĲ...ʺɫģɫť֡ˮ·棩봰ڡ棩ݣôڵʹ˵

 3涨·صģMPaȡֵΧΪ[101000].

 
