±±¾©Ê¯ÓÍ»¯¹¤Ñ§Ôº2026ÄêÑо¿ÉúÕÐÉú½ÓÊÕµ÷¼Á¹«¸æ
²é¿´: 1294  |  »Ø¸´: 9

yangjuan326

ľ³æ (СÓÐÃûÆø)


[½»Á÷] Õâ¸öÉó¸åÒâ¼ûÔõô´ð£¿

ÕÕ×ÅÎÄÏ×ÓÃÏìÓ¦ÃæÉè¼Æ×öÁËʵÑ飬ËùµÃ»Ø¹é·½³ÌϵÊýa1>0£¬a2>0£¬a11<0£¬a22<0£¬ÈýάͼÖдæÔÚ×î´óÖµ¡£ÎÒÔÚ·ÖÎöʱ˵ÒòΪa1>0£¬a2>0£¬ËùÒÔÁ½¸öÒòËØµÄÓ°Ïì¶¼ÊÇpostive£¬ÆäËûûÓÐ×ö¹ý¶à½âÊÍ¡£
Éó¸åÈËÌá³öÎÊÌâ˵¼ÈÈ»´æÔÚ×î´óÖµ£¬ÄÇôÏñÎÒÄÇÑù½âÊÍ£¨ÒòΪa11>0£¬a2>0£¬ËùÒÔÁ½¸öÒòËØµÄÓ°Ïì¶¼ÊÇpostive£©ÊDz»¶ÔµÄ£¬Ó¦¸Ãͬʱ¿¼ÂÇa11ºÍa22À´½âÊÍ¡£ÎÒ¶ÔÏìÓ¦ÃæÁ˽ⲻÉ²é×ÊÁÏÒ²´ó¶àÖ»Ìáµ½ÁËaiÊÇÏßÐÔϵÊý£¬aiiÊǶþ´ÎÏîϵÊý£¬ºÜÉÙ¿´µ½½²ËûÃǵÄÕý¸ºËµÃ÷ÁËʲô£¬ÓÐÄÄλ´óÏÀÁ˽âµÄ¿É·ñÏêϸ½²½âһϣ¿¶àлÁË£¡
»Ø¸´´ËÂ¥

» ²ÂÄãϲ»¶

» ±¾Ö÷ÌâÏà¹Ø¼ÛÖµÌùÍÆ¼ö£¬¶ÔÄúͬÑùÓаïÖú:

» ÇÀ½ð±ÒÀ²£¡»ØÌû¾Í¿ÉÒԵõ½:

²é¿´È«²¿É¢½ðÌù

ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

luanming

½û³æ (ÕýʽдÊÖ)

¡ï
yangjuan326(½ð±Ò+1):лл²ÎÓë
yangjuan326(½ð±Ò+1): 2010-12-09 16:22:52
±¾ÌûÄÚÈݱ»ÆÁ±Î

2Â¥2010-12-09 16:16:29
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

ncuee

Ìú¸Ëľ³æ (ÕýʽдÊÖ)


¡ï
yangjuan326(½ð±Ò+1):лл²ÎÓë
yangjuan326(½ð±Ò+1): 2010-12-09 16:22:58
Ç¿£¬°ï¶¥¡£
3Â¥2010-12-09 16:17:49
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

luanming

½û³æ (ÕýʽдÊÖ)

yangjuan326(½ð±Ò+1): 2010-12-09 16:23:04
±¾ÌûÄÚÈݱ»ÆÁ±Î

4Â¥2010-12-09 16:21:59
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

luanming

½û³æ (ÕýʽдÊÖ)

yangjuan326(½ð±Ò+1): 2010-12-09 16:30:32
±¾ÌûÄÚÈݱ»ÆÁ±Î

5Â¥2010-12-09 16:25:50
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

yangjuan326

ľ³æ (СÓÐÃûÆø)


ÒýÓûØÌû:
Originally posted by luanming at 2010-12-09 16:21:59:
»Ø¹é·½³ÌϵÊýºÃÏñ²»ÄÜ˵Ã÷ÒòËØµÄÏÔÖøÓë·ñ£¬ÐèҪȷ¶¨ÏìÓ¦ÃæÊÔÑé·½²î·ÖÎö£¬²Å¿ÉÒÔÈ·¶¨ÒòËØµÄÏÔÖøÓë·ñ

ÎÒÓõÄÊÇDesign Expert¡£ÄÇÊDz»ÊÇ˵´ÓÕâЩϵÊý±¾Éí˵Ã÷²»ÁËʲôÎÊÌâÄØ£¿ÊDz»ÊÇ¿ÉÒÔ¸ù¾ÝϵÊýÈ·¶¨ÇúÃæÍ¼µÄÐÎ×´ÄØ£¿
6Â¥2010-12-09 16:29:30
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
¡ï
yangjuan326(½ð±Ò+1):лл²ÎÓë
ÒýÓûØÌû:
Originally posted by luanming at 2010-12-09 16:21:59:
»Ø¹é·½³ÌϵÊýºÃÏñ²»ÄÜ˵Ã÷ÒòËØµÄÏÔÖøÓë·ñ£¬ÐèҪȷ¶¨ÏìÓ¦ÃæÊÔÑé·½²î·ÖÎö£¬²Å¿ÉÒÔÈ·¶¨ÒòËØµÄÏÔÖøÓë·ñ

ÓеÀÀí
7Â¥2010-12-09 16:32:15
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

luanming

½û³æ (ÕýʽдÊÖ)

±¾ÌûÄÚÈݱ»ÆÁ±Î

8Â¥2010-12-09 16:38:08
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

hbhehe

ľ³æ (ÖøÃûдÊÖ)


¡ï
yangjuan326(½ð±Ò+1):лл²ÎÓë
²¹³ä½âÊÍÏÂ×î´óÖµ°É
9Â¥2010-12-09 16:51:10
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

fangxingbaixue

ľ³æ (ÖªÃû×÷¼Ò)


¡ï
yangjuan326(½ð±Ò+1):лл²ÎÓë
²»¶®£¬°ï¶¥~
10Â¥2010-12-09 17:02:55
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ yangjuan326 µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] 319Çóµ÷¼Á +3 handrui 2026-04-05 3/150 2026-04-06 09:33 by jp9609
[¿¼ÑÐ] ¸´ÊÔµ÷¼Á +5 asdasdassda 2026-04-05 5/250 2026-04-06 09:32 by dongzh2009
[¿¼ÑÐ] ²ÄÁÏÓ뻯¹¤371Çóµ÷¼Á +14 ÅãÁÕ¿´º£ 2026-04-04 15/750 2026-04-06 06:59 by houyaoxu
[¿¼ÑÐ] Ò»Ö¾Ô¸ËÕÖÝ´óѧ²ÄÁϹ¤³Ì£¨085601£©×¨Ë¶ÓпÆÑо­ÀúÈýÏî¹ú½±Á½¸öʵÓÃÐÍרÀûÒ»ÏîÊ¡¼¶Á¢Ïî +10 ´ó»ðɽС»ðɽ 2026-04-05 10/500 2026-04-05 19:58 by СÎÏţСÎÏÅ£
[¿¼ÑÐ] 08ר˶275µ÷¼Á +5 AaAa7420 2026-04-05 5/250 2026-04-05 18:01 by jkddd
[¿¼ÑÐ] 0860 Çóµ÷¼Á Ò»Ö¾Ô¸¹ú¿Æ´ó 348 ·Ö +3 WiiiP 2026-04-03 3/150 2026-04-05 17:43 by Ecowxq666£¡
[¿¼ÑÐ] ÉúÎïѧ308·ÖÇóµ÷¼Á£¨Ò»Ö¾Ô¸»ª¶«Ê¦´ó£© +8 ÏàÐűػá¹ââÍòÕ 2026-04-05 10/500 2026-04-05 12:19 by Hdyxbekcb
[¿¼ÑÐ] 298Çóµ÷¼Á +7 manman511 2026-04-05 7/350 2026-04-05 10:29 by ÌÆãå¶ù
[¿¼ÑÐ] Çóµ÷¼Á +3 С›g 2026-04-03 3/150 2026-04-05 09:10 by sihailian3
[¿¼ÑÐ] 085602µ÷¼Á ³õÊÔ×Ü·Ö335 +12 19123253302 2026-04-04 12/600 2026-04-05 08:08 by 544594351
[¿¼ÑÐ] 295Çóµ÷¼Á +4 AÄãºÃÑо¿Éú 2026-04-04 5/250 2026-04-04 22:46 by yu221
[¿¼ÑÐ] Çóµ÷¼Á +3 ffyyu 2026-04-02 3/150 2026-04-04 19:03 by À¶ÔÆË¼Óê
[¿¼ÑÐ] 309Çóµ÷¼Á +6 ÁõÁõÁõ1231 2026-04-02 7/350 2026-04-04 13:41 by liucky
[¿¼ÑÐ] 317·Ö Ò»Ö¾Ô¸½­ÄÏ´óѧ »¯Ñ§¹¤³Ìѧ˶ Çóµ÷¼Á +6 YinTai 2026-04-03 6/300 2026-04-03 22:30 by Î޼ʵIJÝÔ­
[¿¼ÑÐ] ²ÄÁÏ340·Öµ÷¼Á +7 ÏÄÒ¹Íí·ç_long 2026-04-02 9/450 2026-04-02 21:20 by dongzh2009
[¿¼ÑÐ] Ò»Ö¾Ô¸±±¾©¿Æ¼¼´óѧ085601²ÄÁϹ¤³ÌÓ¢Ò»Êý¶þ³õÊÔ×Ü·Ö335Çóµ÷¼Á +8 Ë«ÂíβƦÀϰå2 2026-04-02 9/450 2026-04-02 14:45 by 5896
[¿¼ÑÐ] 298ÇóBÇøµ÷¼Á +4 zzz£¬£¬r 2026-04-02 5/250 2026-04-02 12:17 by ÍÁľ˶ʿÕÐÉú
[¿¼ÑÐ] 272Çóµ÷¼Á£¬½ÓÊÜ¿çרҵµ÷¼Á£¡ +4 ÏÐÓ㬠2026-03-31 4/200 2026-04-02 11:18 by guyan1000
[¿¼ÑÐ] Ò»Ö¾Ô¸±±¾©¿Æ¼¼£¬085601×Ü·Ö305Çóµ÷¼Á +9 °ëÉú¹Ï£¡ 2026-04-01 11/550 2026-04-02 08:28 by Wang200018
[¿¼ÑÐ] 303·Ö 0807ѧ˶Çóµ÷¼Á +3 TYC3632 2026-04-01 3/150 2026-04-01 19:24 by lwk2004
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û