ÌÇÄò²¡Òûʳ·½°¸µÄÖƶ¨°üÀ¨ÒÔϲ½Ö裺¢Ù¼ÆËãÿÈÕ×ÜÈÈ¿¨£»¢Ú¼ÆËãÈý´óÓªÑøÎïÖʺ¬Á¿£¬°´1/3¡¢1/3¡¢1/3±ÈÀý·ÖÅäÓÚ3²Í£¬»ò1/7¡¢2/7¡¢2/7¡¢2/7±ÈÀý·ÖÅäÓÚ4²Í¡£
ÈçºÎÖƶ©ÌÇÄò²¡ÒûʳÖÎÁƵķ½°¸£¿
ä¯ÀÀ
ä¯ÀÀ
ÌÇÄò²¡Òûʳ·½°¸µÄÖƶ¨°üÀ¨ÒÔϲ½Ö裺¢Ù¼ÆËãÿÈÕ×ÜÈÈ¿¨£»¢Ú¼ÆËãÈý´óÓªÑøÎïÖʺ¬Á¿£¬°´1/3¡¢1/3¡¢1/3±ÈÀý·ÖÅäÓÚ3²Í£¬»ò1/7¡¢2/7¡¢2/7¡¢2/7±ÈÀý·ÖÅäÓÚ4²Í¡£