·µ»Ø
µÁÄ¹Ö®Å£Æø³åÌì
Ê×Ò³
¹ØµÆ
»¤ÑÛ
×ÖÌ壺
´ó
ÖÐ
С
·¢¸öµ¥Õ½âÊÍÒ»ÏÂ(1/2)
´æÊéÇ©
Êé¼Ü¹ÜÀí
·µ»ØÄ¿Â¼
ºÜ¶à¶ÁÕß´ó´ó¶¼ÖªµÀСµÜµÄ¹¤×÷ÊdzøÊ¦£¬ËùÒÔÕ⼸Ìì¸üÐÂÉÙÊÇÕæµÄÌ«ÀÛÁË£¬ÍíÉÏ10µãϰàÂë×Ö£¬Âë×ÅÂëמÍ˯×ÅÁË¡£
ÕæµÄ¶Ô²»Æð£¬³Ï¿ÒµÀǸ£¨180¶È¾Ï¹ª£©
·¢¸öµ¥Õ½âÊÍÒ»ÏÂ(1/2),µã»÷ÏÂÒ»Ò³¼ÌÐøÔĶÁ
ÉÏÒ»ÕÂ
Ŀ¼
ÏÂÒ»Ò³