ij̽¾¿Ñ§Ï°Ð¡×éµÄͬѧÓû̽¾¿¡°»¬¿éÓë×ÀÃæ¼äµÄ¶¯Ä¦²ÁÒòÊý¡±ËûÃÇÔÚʵÑéÊÒ×é×°ÁËÒ»Ì×Èçͼ1ËùʾµÄ×°Öã¬ÁíÍâËûÃÇ»¹ÕÒµ½´òµã¼ÆʱÆ÷¼°ËùÓõÄѧÉúµçԴһ̨¡¢Ììƽ¡¢¿Ì¶È³ß¡¢µ¼Ïß¡¢Ö½´ø¡¢¹³ÂëÈô¸É¡£
   
£¨1£©Ð¡×éͬѧµÄʵÑé²½ÖèÈçÏ£ºÓÃÌìƽ³ÆÁ¿»¬¿éµÄÖÊÁ¿M =300g£¬½«»¬¿é·ÅÔÚˮƽ×ÀÃæÉϲ¢Á¬½ÓÉÏÖ½´ø£¬ÓÃϸÏßͨ¹ý»¬ÂÖ¹ÒÉÏÁ½¸ö¹³Â루ÿ¸ö¹³ÂëÖÊÁ¿Îª100g£©£¬µ÷Õû»¬Âָ߶ÈʹÀ­»¬¿éµÄϸÏßÓë×ÀÃæƽÐУ¬Èù³ÂëÀ­¶¯»¬¿éÓɾ²Ö¹¿ªÊ¼¼ÓËÙÔ˶¯£¬Óôòµã¼ÆʱÆ÷¼Ç¼ÆäÔ˶¯Çé¿ö¡£
ʵÑéÖ½´øµÄ¼Ç¼Èçͼ2Ëùʾ£¬Í¼ÖÐÇ°¼¸¸öµãÄ£ºý£¬Òò´Ë´ÓAµã¿ªÊ¼Ã¿´ò5¸öµãÈ¡Ò»¸ö¼ÆÊýµã£¬ÈôµçԴƵÂÊΪ50ºÕ×È£¬ÔòÎïÌåÔ˶¯µÄ¼ÓËÙ¶ÈΪ     m/s2¡££¨½á¹û±£ÁôÁ½Î»ÓÐЧÊý×Ö£©£¬»¬¿éÓë×ÀÃæ¼äµÄ¶¯Ä¦²ÁÒòÊý¦Ì=           £¨ÖØÁ¦¼ÓËÙ¶ÈΪg=10m/s2£©¡£
£¨2£©ÎªÌá¸ßʵÑé½á¹ûµÄ׼ȷ³Ì¶È£¬Ä³Í¬Ñ§¶Ô´ËʵÑéÌá³öÒÔϽ¨Ò飺
¢ÙÉþµÄÖÊÁ¿ÒªÇá
¢ÚÔÚ¡°ÇáÖÊÉþ¡±µÄÇ°ÌáÏ£¬Éþ×ÓÔ½³¤Ô½ºÃ
¢ÛʵÑéʱ¾¡Á¿±£³ÖÀ­¶¯»¬¿éµÄϸÏßÓë×ÀÃæƽÐÐ
¢Ü¾¡Á¿±£Ö¤¹³ÂëÖ»ÑØÊúÖ±·½ÏòÔ˶¯£¬²»ÒªÒ¡»Î

£¨1£©0.64 £¬0.56        £¨4·Ö£©£¨2£©¢Ù¢Û¢Ü            £¨2·Ö£©

½âÎö

Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÔĶÁÀí½â

ij̽¾¿Ñ§Ï°Ð¡×éµÄͬѧÓûÒÔÈçͼװÖÃÖеĻ¬¿éΪ¶ÔÏóÑéÖ¤¡°¶¯Äܶ¨Àí¡±£¬ËûÃÇÔÚʵÑéÊÒ×é×°ÁËÒ»Ì×ÈçͼËùʾµÄ×°Öã¬ÁíÍâËûÃÇ»¹ÕÒµ½ÁË´òµã¼ÆʱÆ÷ËùÓõÄѧÉúµçÔ´¡¢µ¼Ïß¡¢¸´Ð´Ö½¡¢Ö½´ø¡¢Ð¡Ä¾¿é¡¢Ï¸É³¡¢µæ¿é£®µ±»¬¿éÁ¬½ÓÉÏÖ½´ø£¬ÓÃϸÏßͨ¹ý»¬ÂÖ¹ÒÉÏ¿ÕµÄСɳͰʱ£¬ÊÍ·ÅСͰ£¬»¬¿é´¦ÓÚ¾²Ö¹×´Ì¬£®ÈôÄãÊÇС×éÖеÄһλ³ÉÔ±£¬ÒªÍê³É¸ÃÏîʵÑ飬Ôò£º
£¨1£©ÄãÈÏΪ»¹ÐèÒªµÄʵÑéÆ÷²ÄÓÐ
Ììƽ
Ììƽ
¡¢
¿Ì¶È³ß
¿Ì¶È³ß
£®£¨Á½¸ö£©
£¨2£©ÊµÑéʱΪÁ˱£Ö¤»¬¿é£¨ÖÊÁ¿ÎªM£©Êܵ½µÄºÏÁ¦ÓëɳºÍɳͰµÄ×ÜÖØÁ¦´óС»ù±¾ÏàµÈ£¬É³ºÍɳͰµÄ×ÜÖÊÁ¿mÓ¦Âú×ãµÄʵÑéÌõ¼þÊÇ
m£¼£¼M
m£¼£¼M
£¬ÊµÑéʱÊ×ÏÈÒª×öµÄ²½ÖèÊÇ
ƽºâĦ²ÁÁ¦
ƽºâĦ²ÁÁ¦
£®
£¨3£©ÔÚ£¨2£©µÄ»ù´¡ÉÏ£¬Ä³Í¬Ñ§ÓÃÌìƽ³ÆÁ¿»¬¿éµÄÖÊÁ¿M£®ÍùɳͰÖÐ×°ÈëÊÊÁ¿µÄϸɳ£¬ÓÃÌìƽ³Æ³ö´ËʱɳºÍɳͰµÄ×ÜÖÊÁ¿m£®ÈÃɳͰ´ø¶¯»¬¿é¼ÓËÙÔ˶¯£¬Óôòµã¼ÆʱÆ÷¼Ç¼ÆäÔ˶¯Çé¿ö£¬ÔÚ´òµã¼ÆʱÆ÷´ò³öµÄÖ½´øÉÏÈ¡Á½µã£¬²â³öÕâÁ½µãµÄ¼ä¾àLºÍÕâÁ½µãµÄËٶȴóСv1Óëv2£¨v1£¼v2£©£®Ôò¶Ô»¬¿é£¬±¾ÊµÑé×îÖÕÒªÑéÖ¤µÄÊýѧ±í´ïʽΪ
mgL=
1
2
M
v
2
2
-
1
2
M
v
2
1
mgL=
1
2
M
v
2
2
-
1
2
M
v
2
1
£¨ÓÃÌâÖеÄ×Öĸ±íʾ£©£®
£¨4£©ÒªÌ½¾¿»¬¿éÓëɳ¼°É³Í°×é³ÉµÄϵͳ»úеÄÜÊÇ·ñÊغ㣬Èç¹ûʵÑéʱËùÓû¬¿éÖÊÁ¿ÎªM£¬É³¼°É³Í°×ÜÖÊÁ¿Îªm£¬ÈÃɳͰ´ø¶¯»¬¿éÔÚˮƽÆøµæµ¼¹ìÉϼÓËÙÔ˶¯£¬Óôòµã¼ÆʱÆ÷¼Ç¼ÆäÔ˶¯Çé¿ö£¬ÔÚ´òµã¼ÆʱÆ÷´ò³öµÄÖ½´øÉÏÈ¡Á½µã£¬²â³öÕâÁ½µãµÄ¼ä¾àLºÍÕâÁ½µãµÄËٶȴóСv1Óëv2£¨v1£¼v2£©£®Ôò×îÖÕÐèÑéÖ¤µÄÊýѧ±í´ïʽΪ
mgL=
1
2
(m+M)(
v
2
2
-
v
2
1
)
mgL=
1
2
(m+M)(
v
2
2
-
v
2
1
)
£¨ÓÃÌâÖеÄ×Öĸ±íʾ£©£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÔĶÁÀí½â

£¨2013?¿ª·âһģ£©Ä³Ì½¾¿Ñ§Ï°Ð¡×éµÄͬѧÓû̽¾¿ºãÁ¦×ö¹¦ÓëÎïÌ嶯Äܱ仯µÄ¹Øϵ£¬ËûÃÇÔÚʵÑéÊÒ×é×°ÁËÒ»Ì×ÈçͼËùʾµÄ×°Öã¬ÁíÍâËûÃÇ»¹ÕÒµ½´òµã¼ÆʱÆ÷ËùÓõÄѧÉúµçԴһ̨¡¢Ììƽ¡¢¿Ì¶È³ß¡¢µ¼Ïß¡¢¸´Ð´Ö½¡¢Ö½´ø¡¢Ð¡Í°ºÍɳ×ÓÈô¸É£®µ±Ð¡³µÁ¬½ÓÉÏÖ½´ø£¬ÓÃϸÏßͨ¹ý»¬ÂÖ¹ÒÉÏСɳͰ£®
£¨1£©Ä³Í¬Ñ§µÄʵÑé²½ÖèÈçÏ£ºÓÃÌìƽ³ÆÁ¿Ð¡³µµÄÖÊÁ¿MºÍɳÓëÍ°µÄ×ÜÖÊÁ¿m£®ÈÃɳͰ´ø¶¯Ð¡³µ¼ÓËÙÔ˶¯£¬Óôòµã¼ÆʱÆ÷¼Ç¼ÆäÔ˶¯Çé¿ö£¬ÔÚ´òµã¼ÆʱÆ÷´ò³öµÄÖ½´øÉÏÈ¡Á½µã£¬²â³öÕâÁ½µãµÄ¼ä¾àL£¬Ëã³öÕâÁ½µãµÄËÙ¶Èv1Óëv2£®
¢Ù±¾ÊµÑé×°ÖÃͼ1£¨×¼±¸·Å¿ªÐ¡³µÊ±¿Ì£©ÖÐÓÐʲôȱµã»ò´íÎó£¿
ϸÏßÓë¹ìµÀƽÃæÓ¦¸ÃƽÐУ¬³õʼʱ¿ÌС³µÓ¦½ô¿¿´òµã¼ÆʱÆ÷£®
ϸÏßÓë¹ìµÀƽÃæÓ¦¸ÃƽÐУ¬³õʼʱ¿ÌС³µÓ¦½ô¿¿´òµã¼ÆʱÆ÷£®

¢ÚÒªÍê³É±¾ÊµÑ飬»¹È±ÄÄЩÖØҪʵÑé²½Ö裿
µ÷½Ú¹ìµÀµÄÇãб³Ì¶È£¬Ê¹Ð¡³µÔÚÎÞÀ­Á¦Ê±ÄÜÔÚ¹ìµÀÉÏÔÈËÙÔ˶¯£¨»òƽºâĦ²ÁÁ¦£©
µ÷½Ú¹ìµÀµÄÇãб³Ì¶È£¬Ê¹Ð¡³µÔÚÎÞÀ­Á¦Ê±ÄÜÔÚ¹ìµÀÉÏÔÈËÙÔ˶¯£¨»òƽºâĦ²ÁÁ¦£©

¢Û±¾ÊµÑéÈÏΪС³µËùÊܺÏÍâÁ¦µÈÓÚɳͰÖØÁ¦£¬ÔòÓ¦¿ØÖƵÄʵÑéÌõ¼þÊÇʲô£¿
M£¾£¾m
M£¾£¾m

£¨2£©ÔÚʵÑé²Ù×÷ÕýÈ·µÄÇ°ÌáÏ£¬ÈôÌôÑ¡µÄÒ»Ìõµã¼£ÇåÎúµÄÖ½´øÈçͼ2Ëùʾ£¬ÒÑÖª    ÏàÁÚÁ½¸öµã¼äµÄʱ¼ä¼ä¸ôΪT£¬´ÓAµãµ½B¡¢C¡¢D¡¢E¡¢FµãµÄ¾àÀëÒÀ´ÎΪs1¡¢s2¡¢s3¡¢s4¡¢s5£¨Í¼ÖÐδ±ês3¡¢s4¡¢s5£©£¬ÔòÓÉ´Ë¿ÉÇóµÃÖ½´øÉÏÓÉBµãµ½EµãËù¶ÔÓ¦¹ý³ÌÖУ¬ºÏÍâÁ¦¶ÔС³µËù×öµÄ¹¦W=
mg£¨S4-S1£©
mg£¨S4-S1£©
£»¸ÃС³µ¶¯ÄܸıäÁ¿µÄ±í´ïʽΪ¡÷EK=
M
8T2
[(S5-S3)2-
S
2
2
]
M
8T2
[(S5-S3)2-
S
2
2
]
£¨½á¹ûÓÃÌâÖÐÒÑÖªÎïÀíÁ¿µÄ·ûºÅ±íʾ£©£»ÈôÂú×ã
W¡Ö¡÷Ek
W¡Ö¡÷Ek
£¬Ôò¶¯Äܶ¨ÀíµÃÖ¤£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

ij̽¾¿Ñ§Ï°Ð¡×éµÄͬѧÓû̽¾¿¡°»¬¿éÓë×ÀÃæ¼äµÄ¶¯Ä¦²ÁÒòÊý¡±ËûÃÇÔÚʵÑéÊÒ×é×°ÁËÒ»Ì×Èçͼ1ËùʾµÄ×°Öã¬ÁíÍâËûÃÇ»¹ÕÒµ½´òµã¼ÆʱÆ÷¼°ËùÓõÄѧÉúµçԴһ̨¡¢Ììƽ¡¢¿Ì¶È³ß¡¢µ¼Ïß¡¢Ö½´ø¡¢¹³ÂëÈô¸É£®

£¨1£©Ð¡×éͬѧµÄʵÑé²½ÖèÈçÏ£ºÓÃÌìƽ³ÆÁ¿»¬¿éµÄÖÊÁ¿M=300g£¬½«»¬¿é·ÅÔÚˮƽ×ÀÃæÉϲ¢Á¬½ÓÉÏÖ½´ø£¬ÓÃϸÏßͨ¹ý»¬ÂÖ¹ÒÉÏÁ½¸ö¹³Â루ÿ¸ö¹³ÂëÖÊÁ¿Îª100g£©£¬µ÷Õû»¬Âָ߶ÈʹÀ­»¬¿éµÄϸÏßÓë×ÀÃæƽÐУ¬Èù³ÂëÀ­¶¯»¬¿éÓɾ²Ö¹¿ªÊ¼¼ÓËÙÔ˶¯£¬Óôòµã¼ÆʱÆ÷¼Ç¼ÆäÔ˶¯Çé¿ö£®
ʵÑéÖ½´øµÄ¼Ç¼Èçͼ2Ëùʾ£¬Í¼ÖÐÇ°¼¸¸öµãÄ£ºý£¬Òò´Ë´ÓAµã¿ªÊ¼Ã¿´ò5¸öµãÈ¡Ò»¸ö¼ÆÊýµã£¬ÈôµçԴƵÂÊΪ50ºÕ×È£¬ÔòÎïÌåÔ˶¯µÄ¼ÓËÙ¶ÈΪ
0.64
0.64
m/s2£®£¨½á¹û±£ÁôÁ½Î»ÓÐЧÊý×Ö£©£¬»¬¿éÓë×ÀÃæ¼äµÄ¶¯Ä¦²ÁÒòÊý¦Ì=
0.56
0.56
£¨ÖØÁ¦¼ÓËÙ¶ÈΪg=10m/s2£©£®
£¨2£©ÎªÌá¸ßʵÑé½á¹ûµÄ׼ȷ³Ì¶È£¬Ä³Í¬Ñ§¶Ô´ËʵÑéÌá³öÒÔϽ¨Ò飺¢ÙÉþµÄÖÊÁ¿ÒªÇá
¢ÚÔÚ¡°ÇáÖÊÉþ¡±µÄÇ°ÌáÏ£¬Éþ×ÓÔ½³¤Ô½ºÃ
¢ÛʵÑéʱ¾¡Á¿±£³ÖÀ­¶¯»¬¿éµÄϸÏßÓë×ÀÃæƽÐÐ
¢Ü¾¡Á¿±£Ö¤¹³ÂëÖ»ÑØÊúÖ±·½ÏòÔ˶¯£¬²»ÒªÒ¡»Î
ÒÔÉϽ¨ÒéÖÐȷʵ¶ÔÌá¸ß׼ȷ³Ì¶ÈÓÐ×÷ÓõÄÊÇ
¢Ù¢Û¢Ü
¢Ù¢Û¢Ü
£®£¨ÔÚ´ðÌ⿨É϶ÔÓ¦ÇøÓòÌîÈëÑ¡ÏîÇ°µÄ±àºÅ£©

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨2008?Õ¿½­¶þÄ££©Ä³Ì½¾¿Ñ§Ï°Ð¡×éµÄͬѧÓûÑéÖ¤¶¯Äܶ¨Àí£¬ËûÃÇÔÚʵÑéÊÒÒÑ×é×°ÁËÒ»Ì×Èçͼ1ËùʾµÄ×°Öã¬ÁíÍâËûÃÇ»¹ÕÒµ½ÁË´òµã¼ÆʱÆ÷ËùÓõÄѧÉúµçԴһ̨£¬Ììƽ¡¢µ¼Ïß¡¢¸´Ð´Ö½¡¢Ö½´ø¡¢Ï¸É³Èô¸É£®µ±»¬¿éÁ¬½ÓÉÏÖ½´ø£¬ÓÃϸÏßͨ¹ý»¬ÂÖ¹ÒÉÏ¿ÕµÄСɳͰʱÒÑÍê³ÉÁËƽºâĦ²ÁÁ¦µÄ²Ù×÷£®ÈôÄãÊÇС×éÖеÄһλ³ÉÔ±£¬ÒªÍê³É¸ÃÏîʵÑ飬Ôò£º
¢Ù»¹ÐèÒªµÄʵÑéÆ÷²Ä
¿Ì¶È³ß
¿Ì¶È³ß
£®
¢ÚÔÚɳͰÖзÅÊÊÁ¿µÄɳ½øÐÐʵÑ飬ÇÒÒÑÖª»¬¿éµÄÖÊÁ¿ÎªM£¬É³ºÍɳͰµÄ×ÜÖÊÁ¿Îªm£¨MÔ¶´óÓÚm£©£¬ÈôÌôÑ¡Ò»Ìõµã¼£ÇåÎúµÄÖ½´øÈçͼ2Ëùʾ£¬ÏàÁÚÁ½¸öµãÖ®¼äµÄʱ¼ä¼ä¸ôΪT£¬´ÓAµãµ½B¡¢C¡¢D¡¢E¡¢FµãµÄ¾àÀëÒÀ´ÎΪS1¡¢S2¡¢S3¡¢S4¡¢S5£¨Í¼ÖÐδ±ê³öS3¡¢S4¡¢S5£©£¬ÔòÓÉ´Ë¿ÉÇóµÃÖ½´øÉÏÓÉBµãµ½EµãËù¶ÔÓ¦µÄ¹ý³ÌÖУ¬»¬¿éºÏÁ¦Ëù×öµÄ¹¦Ô¼ÎªW=
mg£¨s4-s3£©
mg£¨s4-s3£©
£» ¸Ã»¬¿é¶¯ÄܸıäÁ¿µÄ±í´ïʽΪ¡÷Ek=
1
2
M((
S5-S3
2T
)2-(
S2
2T
)2)
1
2
M((
S5-S3
2T
)2-(
S2
2T
)2)
£®£¨½á¹ûÓÃÌâÖÐÒÑÖªÎïÀíÁ¿µÄ×Öĸ±íʾ£© 

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÔĶÁÀí½â

£¨2007?·ðɽ¶þÄ££©Ä³Ì½¾¿Ñ§Ï°Ð¡×éµÄͬѧÓûÑéÖ¤¡°¶¯Äܶ¨Àí¡±£¬ËûÃÇÔÚʵÑéÊÒ×é×°ÁËÒ»Ì×ÈçͼËùʾµÄ×°Öã¬ÁíÍâËûÃÇ»¹ÕÒµ½ÁË´òµã¼ÆʱÆ÷ËùÓõÄѧÉúµçԴһ̨£¬µ¼Ïß¡¢¸´Ð´Ö½¡¢Ö½´ø¡¢Ï¸É³Èô¸É£®µ±»¬¿éÁ¬½ÓÉÏÖ½´ø£¬ÓÃϸÏßͨ¹ý»¬ÂÖ¹ÒÉÏ¿ÕµÄСɳͰʱ£¬ÊÍ·ÅСͰ£¬»¬¿é´¦ÓÚ¾²Ö¹×´Ì¬£®ÈôÄãÊÇС×éÖеÄһλ³ÉÔ±£¬ÒªÍê³É¸ÃÏîʵÑ飬Ôò£º
£¨1£©»¹ÐèÒª²¹³äµÄʵÑéÆ÷²ÄÊÇ
Ììƽ£»¿Ì¶È³ß£»Ð¡Ä¾¿é
Ììƽ£»¿Ì¶È³ß£»Ð¡Ä¾¿é
£®
£¨2£©Ä³Í¬Ñ§µÄʵÑé²½ÖèÈçÏ£ºÓÃÌìƽ³ÆÁ¿»¬¿éµÄÖÊÁ¿M£®ÍùɳͰÖÐ×°ÈëÊÊÁ¿µÄϸɳ£¬ÈÃɳͰ´ø¶¯»¬¿é¼ÓËÙÔ˶¯£¬Óôòµã¼ÆʱÆ÷¼Ç¼ÆäÔ˶¯Çé¿ö£¬ÓÃÌìƽ³Æ³ö´ËʱɳºÍɳͰµÄ×ÜÖÊÁ¿m£®ÔÚ´òµã¼ÆʱÆ÷´ò³öµÄÖ½´øÉÏÈ¡Á½µã£¬²â³öÕâÁ½µãµÄ¼ä¾àL£¬Ëã³öÕâÁ½µãµÄËÙ¶Èv1Óëv2£®ÒªÍê³É±¾ÊµÑ飬»¹È±ÄÄЩʵÑé²½Öè»òÓ¦¿ØÖƵÄʵÑéÌõ¼þ£¿ÈôÓÃÈçÉϵÄ×Öĸ´ú±íʵÑéÖвâÁ¿µ½µÄÎïÀíÁ¿£¬Ð´³ö±¾ÊµÑé×îÖÕÒªÑéÖ¤µÄÊýѧ±í´ïʽ£®
£¨3£©ÈôÌôÑ¡µÄÒ»Ìõµã¼£ÇåÎúµÄÖ½´øÈçÏ£¬ÇÒÒÑÖª»¬¿éµÄÖÊÁ¿ÎªM£¬É³ºÍɳͰµÄ×ÜÖÊÁ¿Îªm£¬ÏàÁÚÁ½¸öµãÖ®¼äµÄʱ¼ä¼ä¸ôΪT£¬´ÓAµãµ½B¡¢C¡¢D¡¢E¡¢FµãµÄ¾àÀëÒÀ´ÎΪS1¡¢S2¡¢S3¡¢S4¡¢S5£¨Í¼ÖÐδ±ê³öS3¡¢S4¡¢S5£©£¬ÔòÓÉ´Ë¿ÉÇóµÃÖ½´øÉÏÓÉBµãµ½EµãËù¶ÔÓ¦µÄ¹ý³ÌÖУ¬É³ºÍɳͰµÄÖØÁ¦Ëù×öµÄ¹¦W=
mg£¨s4-s1£©
mg£¨s4-s1£©
£»¸Ã»¬¿é¶¯ÄܸıäÁ¿µÄ±í´ïʽΪ¡÷EK=
1
2
M[(
S5-S3
2T
)
2
-(
S2
2T
)
2
]
1
2
M[(
S5-S3
2T
)
2
-(
S2
2T
)
2
]
£®£¨½á¹ûÓÃÌâÖÐÒÑÖªÎïÀíÁ¿µÄ×Öĸ±íʾ£©

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸