ÇëÍê³ÉÒÔÏÂÁ½Ð¡Ìâ¡£

(1)ij̽¾¿Ñ§Ï°Ð¡×éµÄͬѧÓûÑéÖ¤¡°¶¯Äܶ¨Àí¡±£¬ËûÃÇÔÚʵÑéÊÒ×é×°ÁËÒ»Ì×ÈçͼËùʾµÄ×°Öã¬ÁíÍâËûÃÇ»¹ÕÒµ½ÁË´òµã¼ÆʱÆ÷ËùÓõÄѧÉúµçÔ´¡¢µ¼Ïß¡¢¸´Ð´Ö½¡¢Ö½´ø¡¢Ð¡Ä¾¿é¡¢Ï¸É³£®µ±»¬¿éÁ¬½ÓÉÏÖ½´ø£¬ÓÃϸÏßͨ¹ý»¬ÂÖ¹ÒÉÏ¿ÕµÄСɳͰʱ£¬ÊÍ·ÅСͰ£¬»¬¿é´¦ÓÚ¾²Ö¹×´Ì¬¡£

ÈôÄãÊÇС×éÖеÄһλ³ÉÔ±£¬ÒªÍê³É¸ÃÏîʵÑ飬Ôò£º

¢ÙÄãÈÏΪ»¹ÐèÒªµÄʵÑéÆ÷²ÄÓР                  ¡£

¢ÚʵÑéʱΪÁ˱£Ö¤»¬¿éÊܵ½µÄºÏÁ¦ÓëɳºÍɳͰµÄ×ÜÖØÁ¦´óС»ù±¾ÏàµÈ£¬É³ºÍɳͰµÄ×ÜÖÊÁ¿Ó¦Âú×ãµÄʵÑéÌõ¼þÊÇ         £¬ÊµÑéʱÊ×ÏÈÒª×öµÄ²½ÖèÊÇ               ¡£

¢ÛÔڢڵĻù´¡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< v2£©£®Ôò±¾ÊµÑé×îÖÕÒªÑéÖ¤µÄÊýѧ±í´ïʽΪ                     £¨ÓÃÌâÖеÄ×Öĸ±íʾʵÑéÖвâÁ¿µÃµ½µÄÎïÀíÁ¿£©¡£

£¨2£©2010ÄêÊÀ²©»áÔÚÉϺ£¾ÙÐУ¬±¾´ÎÊÀ²©»á´óÁ¿²ÉÓõÍ̼»·±£¼¼Êõ£¬Ì«ÑôÄܵç³ØÓÃ×÷ÕÕÃ÷µçÔ´ÊÇÆäÖеÄÁÁµãÖ®Ò»¡£¹è¹âµç³ØÊÇÌ«ÑôÄܵç³ØµÄÒ»ÖÖ£¬Ä³Í¬Ñ§ÎªÁ˲ⶨ¸Ãµç³ØµÄµç¶¯ÊƺÍÄÚµç×裬Éè¼ÆÁËÈçͼ¼×Ëùʾµç·¡£Í¼ÖÐÓëA1´®ÁªµÄ¶¨Öµµç×èµÄ×èֵΪR0£¬µçÁ÷±íÊÓΪÀíÏëµç±í£¬ÔÚÒ»¶¨Ç¿¶ÈµÄ¹âÕÕϽøÐÐÏÂÊöʵÑ飨¼ÆËã½á¹û±£ÁôÁ½Î»ÓÐЧÊý×Ö£©

¢Ù±ÕºÏ¿ª¹Ø£¬µ÷½Ú»¬¶¯±ä×èÆ÷£¬¶Á³öµçÁ÷±íA1¡¢A2µÄÖµI1¡¢I2¡£ÎªÁË×÷³ö´Ëµç³ØµÄ

U£­IÇúÏߣ¬ÐèÒª¼ÆËã³öµç·µÄ·¶ËµçѹU£¬ÔòU£½_________£¨ÓÃÌâÖÐËù¸ø×Öĸ±íʾ£©

¢Ú¸ù¾Ý²âÁ¿Êý¾Ý×÷³ö¸Ã¹è¹âµç³ØµÄU£­IͼÏóÈçͼÒÒËùʾ£¬¸Ãµç³ØµÄµç¶¯ÊÆE=______V£¬ÔÚÁ÷¹ýµçÁ÷±íA2µÄµçÁ÷СÓÚ200mAµÄÇé¿öÏ£¬´Ëµç³ØµÄÄÚ ×èr£½______¦¸£»

¢ÛÈô½«¸Ã¹è¹âµç³ØÁ½¶Ë½ÓÉÏ×èֵΪ6¦¸µÄµç×裬´Ëʱ¶ÔÓ¦µÄµç³ØÄÚ ×èr£½_______¦¸¡£

 

£¨1£©¢ÙÌìƽ£¬¿Ì¶È³ß  (1·Ö)

¢ÚɳºÍɳͰµÄ×ÜÖÊÁ¿Ô¶Ð¡ÓÚ»¬¿éµÄÖÊÁ¿(1·Ö) £¬Æ½ºâĦ²ÁÁ¦(1·Ö)

¢Û     £¨2·Ö£©

£¨2£©¢Ù  I1R0    (1·Ö)  ¢Ú  2.9   £¨2·Ö£©£» 4.0 £¨2·Ö£© ¢Û5.6 £¨2·Ö£©

½âÎö:ÂÔ

 

Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

ÇëÍê³ÉÒÔÏÂÁ½Ð¡Ì⣮
£¨1£©Ä³Í¬Ñ§ÔÚ¼ÒÖг¢ÊÔÑé֤ƽÐÐËıßÐζ¨Ôò£¬ËûÕÒµ½ÈýÌõÏàͬµÄÏðƤ½î£¨×ñÑ­ºú¿Ë¶¨ÂÉ£©ºÍÈô¸ÉСÊÂÎÒÔ¼°¿Ì¶È³ß¡¢Èý½Ç°å¡¢Ç¦±Ê¡¢Ï¸Éþ¡¢°×Ö½¡¢¶¤×Ö£¬Éè¼ÆÁËÈçÏÂʵÑ飺½«Á½ÌõÏðƤ½îµÄÒ»¶Ë·Ö±ðÔÚǽÉϵÄÁ½¸ö¶¤×ÓA¡¢BÉÏ£¬ÁíÒ»¶ËÓëµÚ¶þÌõÏðƤ½îÁ¬½Ó£¬½áµãΪO£¬½«µÚÈýÌõÏðƤ½îµÄÁíÒ»¶Ëͨ¹ýϸ°û¹ÒÒ»ÖØÎ
¢ÙΪÍê³ÉʵÑ飬ÏÂÊö²Ù×÷ÖбØÐèµÄÊÇ
bcd
bcd
£®
a£®²âÁ¿Ï¸ÉþµÄ³¤¶È
b£®²âÁ¿ÏðƤ½îµÄÔ­³¤
c£®²âÁ¿Ðü¹ÒÖØÎïºóÏñƤ½îµÄ³¤¶È
d£®¼Ç¼Ðü¹ÒÖØÎïºó½áµãOµÄλÖÃ
¢Ú¶¤×ÓλÖù̶¨£¬ÓûÀûÓÃÏÖÓÐÆ÷²Ä£¬¸Ä±äÌõ¼þÔÙ´ÎʵÑéÖ¤£¬¿É²ÉÓõķ½·¨ÊÇ
¸ü»»ÖÊÁ¿²»Í¬µÄÖØÎ
¸ü»»ÖÊÁ¿²»Í¬µÄÖØÎ

£¨2£©Èçͼ2ΪÑо¿Ð¡ÇòµÄƽÅ×Ô˶¯Ê±ÅÄÉãµÄÉÁ¹âÕÕƬµÄÒ»²¿·Ö£¬Æä±³¾°ÊDZ߳¤Îª 5cmµÄС·½¸ñ£¬ÖØÁ¦¼ÓËÙ¶ÈgÈ¡10m/s2£®ÓÉͼ¿ÉÖª£ºÐ¡Çò´ÓAµãÔ˶¯µ½Bµã¾­ÀúµÄʱ¼ä
µÈÓÚ
µÈÓÚ
£¨ÌСÓÚ¡±¡¢¡°µÈÓÚ¡±»ò¡°´óÓÚ¡±£©´ÓBµãÔ˶¯µ½Cµã¾­ÀúµÄʱ¼ä£»ÕÕÏà»úµÄÉÁ¹âƵÂÊΪ
10
10
Hz£»Ð¡ÇòÅ׳öʱµÄ³õËٶȴóСΪ
2.5
2.5
m/s£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨1£©²âÁ¿Ä¾¿é³¤¶ÈµÄÓα꿨³ß¶ÁÊýÈçͼ1Ëùʾ£¬¶ÁµÃd=
3.62mm
3.62mm
cm£®
£¨2£©ÇëÍê³ÉÒÔÏÂÁ½Ð¡Ì⣮ijͬѧÔÚ¼ÒÖг¢ÊÔÑé֤ƽÐÐËıßÐζ¨Ôò£¬ËûÕÒµ½ÈýÌõÏàͬµÄÏðƤ½î£¨×ñÑ­ºú¿Ë¶¨ÂÉ£©ºÍÈô¸ÉСÖØÎÒÔ¼°¿Ì¶È³ß¡¢Èý½Ç°å¡¢Ç¦±Ê¡¢Ï¸Éþ¡¢°×Ö½¡¢¶¤×Ó£¬Éè¼ÆÁËÈçͼ2ʵÑ飺½«Á½ÌõÏðƤ½îµÄÒ»¶Ë·Ö±ð¹ÒÔÚǽÉϵÄÁ½¸ö¶¤×ÓA¡¢BÉÏ£¬ÁíÒ»¶ËÓëµÚÈýÌõÏðƤ½îÁ¬½Ó£¬½áµãΪO£¬½«µÚÈýÌõÏðƤ½îµÄÁíÒ»¶Ëͨ¹ýϸÉþ¹ÒÒ»ÖØÎ¢ÙΪÍê³ÉʵÑ飬ÏÂÊö²Ù×÷ÖбØÐèµÄÊÇ
bcd
bcd

a£®²âÁ¿Ï¸ÉþµÄ³¤¶È£® b£®²âÁ¿ÏðƤ½îµÄÔ­³¤
c£®²âÁ¿Ðü¹ÒÖØÎïºóÏðƤ½îµÄ³¤¶È
d£®¼Ç¼Ðü¹ÒÖØÎïºó½áµãOµÄλÖÃ
¢Ú¶¤×ÓλÖù̶¨£¬ÓûÀûÓÃÏÖÓÐÆ÷²Ä£¬¸Ä±äÌõ¼þÔÙ´ÎʵÑéÖ¤£¬¿É²ÉÓõķ½·¨ÊÇ£º
¸ü»»²»Í¬µÄÖØÎï
¸ü»»²»Í¬µÄÖØÎï
£®
£¨3£©Ä³Í¬Ñ§×öÁËÒ»´Î½ÏΪ¾«È·µÄ²â¶¨ÔȼÓËÙÖ±ÏßÔ˶¯µÄ¼ÓËٶȵÄʵÑ飬ʵÑéËùµÃµ½µÄÖ½´øÈçͼ3Ëùʾ£¬Éè0µãÊǼÆÊýµÄÆðʼµã£¬Á½¼ÆÊýµãÖ®¼äµÄʱ¼ä¼ä¸ôΪ0.1s£¬ÔòµÚÒ»¸ö¼ÆÊýµãÓë0µãµÄ¾àÀës1ӦΪ
4
4
cm£¬ÎïÌåµÄ¼ÓËÙ¶È
1m/s2£®
1m/s2£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÔĶÁÀí½â

£¨2011?ɽ¶«Ä£Ä⣩ÇëÍê³ÉÒÔÏÂÁ½Ð¡Ì⣮
¢ñ£®ÔÚ×ö¡°Ñо¿ÔȱäËÙÖ±ÏßÔ˶¯¡±µÄʵÑéʱ£¬Ä³Í¬Ñ§µÃµ½Ò»ÌõÓôòµã¼ÆʱÆ÷´òϵÄÖ½´ø£¬ÈçͼËùʾ£¬²¢ÔÚÆäÉÏÈ¡ÁËA¡¢B¡¢C¡¢D¡¢E¡¢FµÈ6¸ö¼ÆÊýµã£¬£¨Ã¿ÏàÁÚÁ½¸ö¼ÆÊýµã¼ä»¹ÓÐ4¸ö´òµã¼ÆʱÆ÷´òϵĵ㣬±¾Í¼ÖÐûÓл­³ö£©´òµã¼ÆʱÆ÷½ÓµÄÊÇ¡°220V¡¢50Hz¡±µÄ½»±äµçÁ÷£®Èçͼ£¬Ëû°ÑÒ»°ÑºÁÃ׿̶ȳ߷ÅÔÚÖ½´øÉÏ£¬ÆäÁã¿Ì¶ÈºÍ¼ÆÊýµãA¶ÔÆ룬Çó£º

£¨1£©´òµã¼ÆʱÆ÷ÔÚ´òB¡¢C¡¢D¡¢E¸÷µãʱÎïÌåµÄ˲ʱËÙ¶ÈÈçÏÂ±í£º
vB vC vD vE
0.12m/s 0.16m/s 0.25m/s
ÔòvD=
0.21
0.21
m/s£®
£¨2£©¸ù¾Ý£¨1£©Öеõ½µÄÊý¾Ý£¬ÊÔÔÚͼÖÐËù¸øµÄ×ø±êϵÖУ¬»­³öv-tͼÏ󣬲¢´ÓÖпɵóöÎïÌåµÄ¼ÓËÙ¶Èa=
0.43
0.43
m/s2£®
£¨3£©Èç¹ûµ±Ê±µçÍøÖн»±äµçÁ÷µÄƵÂÊÊÇf=49Hz£¬¶ø×öʵÑéµÄͬѧ²¢²»ÖªµÀ£¬ÄÇôÓÉ´ËÒýÆðµÄϵͳÎó²î½«Ê¹¼ÓËٶȵIJâÁ¿Öµ±Èʵ¼Êֵƫ
´ó
´ó
£®
¢ò£®Ä³Í¬Ñ§ÓûÉè¼ÆÒ»¸öµç·£¬×ÔÖÆһ̨µç×Ó³Ó£¬Í¨¹ý²éÔÄ×ÊÁÏ·¢ÏÖµç×Ó³ÓµÄÖ÷Òª²¿¼þΪһ¸öѹÃôµç×裬ûÓÐѹÁ¦Ê±×èֵΪ20¦¸£¬ÔÊÐíͨ¹ýµÄ×î´óµçÁ÷Ϊ0.5A£¬ÏÖÓÐÏÂÁÐÆ÷²Ä£ºÑ¹Ãôµç×è¡¢ÖÊÁ¿Îªm0µÄíÀÂë¡¢µçÁ÷±í¡¢»¬¶¯±ä×èÆ÷¡¢¸Éµç³Ø¸÷Ò»¸ö¡¢¿ª¹Ø¼°µ¼ÏßÈô¸É¡¢´ý²âÎïÌ壨¿ÉÖÃÓÚѹÃôµç×èµÄÊÜѹÃæÉÏ£©£®ÇëÍê³É¶Ô¸ÃÎïÌåÖÊÁ¿µÄ²âÁ¿£®
A£®Ö±Á÷µçÔ´£ºµç¶¯ÊÆÔ¼4.5V£¬ÄÚ×èºÜС£»
B£®µçÁ÷±íA1£ºÁ¿³Ì0¡«0.6A£¬ÄÚ×è0.125¦¸£»
C£®µçÁ÷±íA2£ºÁ¿³Ì0¡«3.0A£¬ÄÚ×è0.025¦¸£»
D£®»¬¶¯±ä×èÆ÷R1£º×î´ó×èÖµ10¦¸£»
E£®»¬¶¯±ä×èÆ÷R2£º×î´ó×èÖµ50¦¸£»
F£®¿ª¹Ø¡¢µ¼Ïߵȣ®
£¨1£©Ôڿɹ©Ñ¡ÔñµÄÆ÷²ÄÖУ¬Ó¦¸ÃÑ¡ÓõĵçÁ÷±íÊÇ
A1
A1
£¬Ó¦¸ÃÑ¡ÓõĻ¬¶¯±ä×èÆ÷ÊÇ
R1
R1
£®
£¨2£©¸ù¾ÝËùÑ¡Æ÷²ÄÉè¼ÆÒ»¸öµç·£¬ÓÃÀ´Ãè»æѹÃôµç×èµÄµçÁ÷ËæѹÁ¦±ä»¯µÄ¹ØϵͼÏó£¬ÒªÇóѹÃôµç×èÁ½¶Ëµçѹµ÷½Ú·¶Î§¾¡¿ÉÄÜ´ó£¬ÔÚ·½¿òÖл­³öÍê³ÉµÄ²âÁ¿µç·£¬²¢¸ù¾ÝÉè¼ÆµÄµç·ͼÁ¬½ÓʵÎïͼ£¬ÈçͼËùʾ£»

£¨3£©Çë˵Ã÷¾ßÌåµÄ²âÁ¿²½Ö裮

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£ºÔĶÁÀí½â

¾«Ó¢¼Ò½ÌÍøÇëÍê³ÉÒÔÏÂÁ½Ð¡Ì⣮
£¨1£©ÔÚÀûÓÃ×ÔÓÉÂäÌåÑéÖ¤»úеÄÜÊغ㶨ÂÉʱ£¬Ä³Í¬Ñ§°´ÕÕÕýÈ·µÄ²Ù×÷Ñ¡µÃÖ½´øÈçͼ£¬ÆäÖÐOÊÇÆðʼµã£¨´òµã¼ÆʱÆ÷´òOµãʱ£¬ÎïÌåÇ¡ºÃ¿ªÊ¼ÏÂÂ䣩£¬A¡¢B¡¢CÊÇ´òµã¼ÆʱÆ÷Á¬Ðø´òϵÄ3¸öµã£¬ÒÑÖª´òµã¼ÆʱÆ÷ʹÓõĽ»Á÷µçԴƵÂÊΪ50Hz£¬¸ÃͬѧÓúÁÃ׿̶ȳ߲âÁ¿Oµ½A¡¢B¡¢C¸÷µãµÄ¾àÀë·Ö±ðΪ9.51cm¡¢12.42cm¡¢15.70cm£®ÈôÏÂÂäÎïÌåµÄÖÊÁ¿Îª0.1Kg£¬¸ÃͬѧÓÃËüÔÚOB¶ÎµÄÔ˶¯À´ÑéÖ¤»úеÄÜÊغ㶨ÂÉ£¬Ôò¸Ã¹ý³ÌÎïÌåÖØÁ¦ÊÆÄܵļõÉÙÁ¿Îª
 
 J£¬¶¯ÄܵÄÔö¼ÓÁ¿Îª
 
J£¨½á¹û¾ù±£Áô3λÓÐЧÊý×Ö£¬ÒÑÖªµ±µØµÄÖØÁ¦¼ÓËÙ¶Èg=9.8m/s2£©£®
£¨2£©Í¼¼×ΪÈÈÃôµç×èÓë¼ÌµçÆ÷×é³ÉµÄ¿Øε緣¬ÓÃÀ´¿ØÖƵç±ùÏäµÄ¹¤×÷£®µç·ÖÐÈÈÃôµç×èÖÃÓÚ±ùÏä´¢²ØÊÒÄÚ£¬R2Ϊµ÷εç×裬µ÷½ÚËü£¨¼´µ÷½Ú±ùÏäÄÚµÄοØÐýÅ¥£©¿ÉÒÔÉèÖõç±ùÏä´¢²ØÊÒµÄζȣ¬µ±±ùÏä´¢²ØÊÒÄÚµÄζȸßÓÚÉèÖÃζÈʱ£¬µç·Öм̵çÆ÷ÏßȦÖеĵçÁ÷´óÓÚ20mA£¬¼ÌµçÆ÷ÏÎÌúP±»ÎüºÏ£¬±ùÏäѹËõ»ú£¨½ÓÔÚͼÖÐa¡¢bÁ½µã¼ä£©¿ªÊ¼¹¤×÷£®Í¼ÒÒΪ¸ÃÈÈÃôµç×èµÄ×èÖµËæζȱ仯µÄÇúÏߣ®ÒÑÖª¼ÌµçÆ÷ÏßȦµÄµç×èR1=25¦¸£¬µçÔ´µÄµç¶¯ÊÆE1=9V£¬ÄÚ×è²»¼Æ£®¾«Ó¢¼Ò½ÌÍø
¢ÙÈô½«R2µ÷µ½25¦¸£¬±ùÏä´¢²ØÊÒÉèÖõÄζÈΪ
 
?C£®
¢ÚÒªÏëʹ±ùÏäÄÚÉèÖõÄζÈÔÙ¸ßÒ»µã£¬µç×èR2µÄ»¬¶¯´¥Í·Ó¦¸ÃÏò
 
Òƶ¯£®
¢ÛÈô¸ü»»µç·ÖÐijһԪ¼þ£¬²¢¶Ôµç·½øÐÐÊʵ±¸ÄÔ죬¿ÉÒÔÓÃÀ´¿ØÖÆ·µÆ£¨Â·µÆ½ÓÔÚa¡¢bÁ½µã¼ä£©£¬Ê¹Ö®Äܹ»¸ù¾ÝÍâ½çµÄÁÁ°µ×Ô¶¯¿ªÆô»ò¹Ø±Õ£¬ÐèÒª½«
 
¸ü»»³É
 
£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

ÇëÍê³ÉÒÔÏÂÁ½Ð¡Ì⣺
£¨1£©Í¼aÖÐÂÝÐý²â΢Æ÷¶ÁÊýΪ
 
mm£®Í¼bÖÐÓα꿨³ß£¨Óαê³ßÉÏÓÐ50¸öµÈ·Ö¿Ì¶È£©¶ÁÊýΪ
 
cm£®
¾«Ó¢¼Ò½ÌÍø
£¨2£©ÈçͼËùʾΪ²âÁ¿Ò»Ö±Á÷µçÁ÷±íÄÚµç×èµÄʵÎïͼ£®Æä¹æ¸ñÈçÏ£ºÖ±Á÷µçÔ´£¨E£©£ºE=6V£¬ÄÚ×è²»¼Æ£»
´ý²âµçÁ÷±í£¨A£©£ºÁ¿³Ì0¡«300mA£¬ÄÚ×èÔ¼3¦¸£»
Ö±Á÷µçѹ±í£¨V£©£ºÁ¿³Ì0¡«3V£¬ÄÚ×èÔ¼1500¦¸£»
µç×èÏ䣨R1£©£º×î´óÖµ999.9¦¸£¬×îС¸Ä±äÁ¿0.1¦¸£»
»¬Ïß±ä×èÆ÷£¨R2£©£º×î´óÖµ10¦¸£»
µ¥µ¶µ¥ÖÀ¿ª¹Ø£¨K£©£»µ¼ÏßÈô¸É£®
¾«Ó¢¼Ò½ÌÍø
¢ÙÇëÔÚ·½¿òͼÄÚ»­³ö²âÁ¿µçÁ÷±íÄÚµç×èµÄʵÑéÔ­Àíͼ£¨±êÃ÷¸÷Ôª¼þµÄ´úºÅ£©£®
¢Ú¸ù¾ÝËù»­Ô­Àíͼ£¬ÓÃÏ߶δúÌæµ¼Ïß½«Í¼ÖÐËùʾʵÎïͼÁ¬½Ó³ÉʵÑéµç·ͼ£®
¢Û¸ù¾ÝʵÑéµç·£¬¼ÆËãµçÁ÷±íÄÚµç×èµÄ¹«Ê½ÎªRA=
 
£¬Ê½Öи÷ÎïÀíÁ¿µÄº¬ÒåÊÇ
 
£®
¢ÜÁ¬½Óµç·ʱӦעÒâµÄÖ÷ÒªÊÂÏ
 
£¨ÈλشðÒ»Ï£®

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸