ÉϺ£Ë®±Ã¼¯Íż¼ÊõÖ®ÁªÖáÆ÷ÕÒÕý
ÁªÖáÆ÷ÕÒÕýÓÖ½ÐÕÒͬÐÄ¡£±Ã¡¢µç»ú¶¼°²×°ÍêÖ®ºó£¬×îºóÒ»Ï×÷¾ÍÊDZÃÓëµç»úÕÒͬÐÄ£¬Ò²¾ÍÊÇʹ±ÃÓëÔ¶¯»úµÄÖáÐÄÔÚͬһֱÏßÉÏ£¬Ê¹Ö®ÔÚÔËתÖв»ÖÂʹÕñ¶¯¡£Ð°²×°µÄ±Ã½øÐÐÕÒÕýʱ£¬ÁªÖáÆ÷µÄ¾¶ÏòºÍÖáÏòÎó²î¿ÉÄܳöÏÖÒÔÏÂËÄÖÖÇé¿ö:
·½·¨Ò»
Ò»°ãµÄ±Ã£¨Ë®±Ã¡¢Ð¡Óͱã©¿ÉÒÔÓÃƽ³ß»òÈû³ß½øÐдֲ⣬µ«ÊǶԴó¶àÊýÉ豸¶¼ÐèÒª¾«²â£¬Óðٷֱí½øÐвâÁ¿¡£Ò»°ã»ú±ÃµÄˮƽ¶ÈÒÑÕҺã¬ÒÔ»ú±ÃµÄ¶ÔÂÖΪ»ù×¼£¬²â¶¨Óëµ÷Õûµç»ú¶ÔÂÖ£¬À´±£Ö¤µç»úÓë»ú±ÃÁ½Öá¶ÔÖС£
×¢£ºa1¡¢a2¡¢a3¡¢a4±íʾ¾¶Ïò¼ä϶£¬S1¡¢S2¡¢S3¡¢S4±íʾÖáÏò¼ä϶²âÁ¿Ê±ÏȲâ³ö°Ù·Ö±íÔÚ0¡ãʱµÄ¾¶Ïò¼ä϶a1ºÍÖáÏò¼ä϶S1£¬È»ºó·Ö±ð²â³ö90¡ã¡¢180¡ã¡¢270¡ãµÄ¾¶ÏòÓëÖáÏò¼ä϶£¬²¢·Ö±ð¼Ç¼ÓÚÉÏͼËùʾµÄÔ²ÄÚÓëÔ²Íâ¡£²âÁ¿»Øµ½0¡ãʱ£¬±ØÐëÓëÔʼ¶ÁÊýÒ»Ö£¬·ñÔòÒª²éÕÒÔÒò£¬Ò»°ãÓÉÖá´Ü¶¯»òµØ½ÅÂÝ˨Ëɶ¯ËùÖ¡£×îºó²âÁ¿Êý¾Ý»¹Ðë·ûºÏÒÔÏÂÌõ¼þ£¬²Å±íʾ¼ÆËãÕýÈ·¡£
a1+a3=a2+a4
S1+S3=S2+S4
·½·¨¶þ£ºÁ½±íÕÒÕý
°Ñ°Ù·Ö±í¼Üµ½±Ã¶Ë£¬½«°Ù·Ö±í¶ÔÁ㣬½«¶ÔÂÖÐýתһȦ£¬Ã¿90¶ÈµÃµ½Ò»¸öÊýÖµ£¬×îºó°Ù·Ö±íת»ØÆäʼλʱ±ØÐë»ØÁ㣬×óÓÒ¶ÁÊýÏà¼ÓÓ¦¸ÃµÈÓÚÉÏÏÂÊýÖµÏà¼ÓÖ®ºÍ¡£È»ºó¸ù¾Ý¶ÁÊý·ÖÎö³öÁ½ÖáµÄÏà¶Ô¿Õ¼äλÖÃ×´¿ö£¬¸ù¾ÝÆ«²îÖµ×÷³öÊʵ±µ÷Õû¡£Ê×Ïȵ÷ÕûÁªÖáÆ÷µÄ×óÓÒÆ«²îµ½ÔÊÐíÖµ£¬È»ºóµ÷Õû¸ßµÍÖÁ±ê×¼Ö®ÄÚ¡£
ÕÒÕý¹«Ê½£º
n Sl=¡À£¨¶ÔÂÖÖáÏò²îÖµ£¨ÕÅ¿Ú¾ø¶ÔÖµ£©¡ÁÖ§½Å1µ½²âµã¾àÀ룩¡Â²âµãÖ±¾¶¡ÀÔ²Öܾ¶Ïò²å£¨²î£©Öµ/2£»
n S2=¡À£¨¶ÔÂÖÖáÏò²îÖµ¡ÁÖ§½Å2µ½²âµã¾àÀ룩¡Â²âµãÖ±¾¶¡ÀÔ²Öܾ¶Ïò²å£¨²î£©Öµ/2£»
µÚÒ»¸ö¡À£ºÈç¹û¶ÔÂÖÊÇÉÏÕÅ¿Ú£¬È¡¡°+¡±ºÅ£»Èç¹ûÊÇÏÂÕÅ¿Ú£¬ÔòÈ¡¡°-¡±ºÅ¿ÉÀí½âΪ´ÓÉÏÍùÏÂÅÌ£»
µÚ¶þ¸ö¡À£ºµç»úµÍʱȡ¡°+¡±£»µç»ú¸ßʱȡ¡°-¡±¿ÉÀí½âΪ´ÓÉÏÍùÏÂÅ̱íÊÇÕýдÕýÊǸºÐ´¸º¡£
S1ÊÇÕýµÄ»°£¨ÉÏÕÅ¿ÚÇÒµç»úÆ«µÍ£©£¬ËµÃ÷Ó¦¸ÃµæµæƬ,S1Êý¼´ÊÇÒªµæµÄµæƬºñ¶È¡£
Áí£º²âµãÖ±¾¶Îª²â±íµãÐýתֱ¾¶£¬¶ø²»ÊÇÁªÖáÆ÷Ö±¾¶¡£µ÷Õû×óÓÒÓëÖ®ÀàËÆ¡£
·½·¨Èý£º¼Óµæ×Ó·½·¨
¼Ó¼õµæ×Ó¼ÆËã·½·¨
£¨a3-a1£©¡ÁL1/ D+£¨S3-S1£©/ 2
£¨a3-a1£©¡Á£¨L1+L2£©/ D+£¨S3-S1£©/ 2
ÆäÖУº
n a±íʾÖáÏò±í¶ÁÊý
n D±íʾ¿¿±³ÂÖÖ±¾¶
n L1±íʾ¿¿±³ÂÖµ½µç»úÇ°½Å¾àÀë
n L2±íʾµç»úÇ°½Åµ½ºó½ÅµÄ¾àÀë
n S±íʾ¾¶Ïò±íµÄ¶ÁÊý
ÕâµÃ³öµÄ½á¹û¾ÍÊÇÄãµç»úÒª¼ÓÔÚÇ°½ÅºÍºó½ÅµÄµæ×ÓÊýÁ¿¡£
Ë«±íÕÒÕý£¬ºÃÊǺ㬵«ÖáÏòµÄλÒÆÓÐʱ²»ºÃÕÆÎÕ¡£ÐÂÊÖ¿¿ÔËÆøÒ²Ðí°ëÌì¸ã²»¶¨£¬ÀÏʦ¸µÆ¾¾ÑéÊ®¼¸·ÖÖӸ㶨£¡
×îºÃÊÇÔÚ180¡ãµÄµØ·½ÔÙ¼ÓÒ»¿éÖáÏòµÄ±í¡£ËùνÈý±íÕÒÕý¡£