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作者: ²ÝÎr   ²»Ðí·´µ³·´‡ë¼Ò·´Ãñ×åµÄÐÂÈý·´ 2021-03-11 03:15:24  [点击:9370]
: Щ۹Ȼý֣
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պýɡ(Will Rogers) 170. If you are not brave enough, no one will back you up. 㲻¸ңûǿ171. If you don\\\\\\\\\\\'t build your dream, someone will hire you to build theirs. û룬ôֻΪ˵򹤡172. Beauty is all around, if you just open your heart to see. ֻҪԼᣬᷢԺ173. The difference in winning and losing is most often...not quitting. ƿһɶĶάΣ̥ǿ ƿ ƿ ĶάΡ۲ƿһƺ󣭣ƿƿƿཻģ仰˵ƿϵijЩƿϵijЩռάռеͬһλáǿ԰ѿƿάռ⣺ƿһάռвſֳ档һҪάռУֻý͵㣬ֵƺԼԼཻһƿƿǴ˵άռٺƿȦģƿڡŤȷƽϵߵĻôƺཻһƺֶϳءʵףͼʵάռеߡԼཻϵһߡƽһȻеάĻͿԴάܿԼֻཻΪҪڶάƽʱֻýһ㣬ཻ߶˵ӡƿҲһǿ԰ɴάռе档άռУʹܹɽҲòཻģͺĻңֽϻŤʱҲòǻཻģȤǣѿƿĶԳȥõĪ˹ڶάƴ ڶάƴ Ī˹ܹչһάռһάչ֮ռģ͡ĻƿֻΪչһάռжάչ֮ռģ͡IJοΪĪ˹ĹУҪֽ180㷭תβһάռµIJġάռжάչ֮ռģ͡ӦڶάУⷽǰԻصԭģͣƿȻڶάϿⷽǰֻضķϲŻصԭ㣬ֻһϣصԭ֮ǰᾭһԭ㡱ġάռжάչ֮ռģ͡ҲӦڶάϳκηǰȾһΡԭ㡱ٻصԭ㡣ģͣҪάռ϶άģͽŤѧһҪ֧СѧҪоͼı״ʱһЩ͹ɵģƿĪ˹ѧȤ֮һĪ˹ĸ㷺Ӧõ˽ҵСάռĿƿ ѧĶ༭ ƿΪ [0,1][0,1] ģȼ۹ϵ(0,y)~(1,y), 0y1 (x,0)~(1-x,1), 0x1 Mobius Band, ƿɶ򡣵 Mobius Ƕ ƿֻǶάάռ䡣Ī˹༭ һֽһŤ180㣬ٺһճ͵õһĪ˹ģ͡ҲһֻĪ˹һ棬Ǻ桢̥Ϳƿͬǣбߣע⣬ֻһߣǰĪ˹Ψһıճ͵õһƿ Ī˹ Ī˹ ȻҪˣDZάռвпճϣĻͲòֽ˺һ㣩ͬأһƿʵؼǾܵõĪ˹濴Ŀƿģһֲ̫Ϊ֪ġ8Ρƿȫͬάռʵͬһ棭ƿʵϣ˵ƿһ3Ī˹֪ƽϻһԲԲڷһڶȿռнóͲòԽԲܡȿռУײԽԲܾͽóŵԲ⡣Ĺ켣ͬԭԲͶӰȿռУһάƿĪ˹Ī˹ָϵĪ˹һ£ǵ3ռУڲƵǵǰ´ӼȡƣĶȿռȴԡƵĹ켣ͬͶӰȿռУȻԿһƿ쾭༭ ȥ¹ѧҿˡܡ룬ѧĴƿƿӸûڡ֣֮۴ʲôط͸棬֮Ȼƿ棬ԣϾһڡĹŹִֶҵѾչ÷dzȽǣνġƿȴʼǴѧҿͷġ鹹첻ҵѧһΪ׸ѧҴȻȴǵһʧܽһʧܡҲΪʹ첻ƷһֽģҲĽ⣬ǿǸջֱ µоΪֱ920ڹ꣬[28] Ŀǰɹ۲ԼΪ138.2ꡣ[29] ״ ΢¶һ˸ߣʾ״ ΢¶һ˸ߣʾ״ [30] ĿǰΪ״ĸ״Դըۣͬһġ桱[31] ͬʱѧҲΪƽ̹ģֵĵ飬ƽ̹ģ2013ĵ鷢ƽ̹ģôֻ0.4%[32] ˹ٷҡʾ״һŵļͼΣӽڳʵͬĦġ˹ ϵ ϵ [33] ͼһ뷨ΪݣĿǰȻڼ֮Уδ֤״ӦֶǶģʽظֵŤ棬价ۣͬ˹ġԲμIVͼҲʦP.H. Smithġʷ˹Բͼƣֳ˫ռĸһַŷεĿռ̬[34] νṹ ѧоɹвνṹġ ײϵNGC 470NGC 474 ײϵNGC 470NGC 474 [35] ̬͡ġ˶չϵͳǡСǡǺ嶼Χ̫ת̫ϵ̫ϵҲϵͳԼ2500ڿ̫ĺǺǼʹɸ޴ϵͳϵϵֱԼ10̫꣬λϵһУԼ2.6ꡣϵ⻹ƵϵͳΪϵϵĿǰ۲⵽1000ڸϵѧҹ2ڸϵϵۼɴССļţϵšƽԣÿϵԼаϵֱǧꡣѷϵšϵԼ40ϵɵһСϵŽбϵȺԲϵHercules Aijڶ ԲϵHercules Aijڶ [36] ϵżһ𹹳ɵĸһεϵͳгϵšϵбⳤΣ䳤ɴڹꡣͨϵֻмϵţֻϵӵмʮϵšϵȺ丽Լ50ϵŹɵijϵŽϵšϵ ݿɷӳϵչ״̬кŶϵ˷࣬ԴԵؽϵֳԲϵ͸ϵϵϵͲϵ֡[37] ̫ϵ ̫ռ̫ϵ99.86%Լǿ NASA̫籩Ƭ NASA̫籩Ƭ [38] ̫ϵεΧʹDz벻ɢȻԼתͬʱ̫ΪһͨǣijԱŲϢϵ˶[39] ̫İ뾶Ϊ696000ǧףΪ1.98910^30kg¶Լ15000000 棬[40] һվ̫棬ôؽڵϵ20[41] ִƼ˵ݹ۲Ϻۼ㣬̫ϵԭʼǾ޴Ǽ߽һСƣһʼתIJγ̫ⲿݻ̣ԺγǡĿǰִ˵ִڲͬѧɣЩѧ֮仹дһо֤ʵ[42] ̫ĵڶǣҹȽ[43] ûˮȱ̼ռ97%ϣһ20ǧ30ǧ׵Ũƣ¶ȴӲ400棬Ǹʵġ硣ǵĴѹǿΪ90൱ڵ900ʱѹǿǴҪɶ̼ɣʧصЧӦǵ½ǼҪԭڽûŲ㱣շŲдųͷŵľ޴ʹýǴȺݡѧΪϴݣɽȱˮ̼ijܴ֣ӶصЧӦԭ[44] ľ̫ǣһţ ľǼŷްͣľ ľǼŷްͣľ [45] ĺ2318ֱ142987km̬ûʵ棬90%10%ĺԭ֮, 75/25%ȣ΢ļ顢ˮˮ͡ʯͷɡγ̫ϵԭʼ̫ϵƵʮơľǿһʯʵںˣ൱1015ںǴ󲿷ֵʼأҺ̬ʽڡҺ̬ӻɣ̫ڲ¶ȵͶˣľǹ67ľľɽԶĴΪľʮľʮġľ塢ľʮ塢ľһľľľġľʮľľʮľߡľʮľʮһľ˺ľš[46] ˮӽ̫ǡˮǵİ뾶ԼΪ2440ڰ˴Сġˮҹ²󣬰 430 ȣԼɴ170 ȣ̫ϵ˴²һǡ[47] ˮǵdzϡˮDZ̫еԭӺӹɡ[48] ѧȷˮDZ溬зḻ̼Ϊ̼ˮDZʺɫԭˮDZʯɵٷֱȵʯī̼ɡ[49] š̽ڻDZɼ š̽ڻDZɼ [50] ǵĽڣ̫ϵĿǡֱ6794kmΪ15%Ϊ11%DZһ磬ж̼ռ95%ǴʮϡܶȻ1%޷⵼»DZ¶ȼͣٳ0棬ҹ¶ɴﵽ-123档DZΪɫǣΪ沼ֳɫĴ󲿷ֵǺдĺɫĴɳĮɫʯغ̵ϳҵĴ磬ɳγɿԸǻȫشɳÿɳɳڡıںͻǴкˮݡӻDZõ֤̽ԶʱڣйҺ̬ˮˮر[51] ̫ǣֱ120536NľǡҪɣĺ΢ԪأڲĺİʯͱΧš13ڹǵȵǿ2.5ܹǣ̫ϵǣʹһԲУ̫ʵ룬ܡǹб20ȽʹȽǹӽ̫ͬʱ⽫»ȫ뿪̫ϵ[52] ֪ΨһܶСˮǣܹǷһ޴ԡ֮УƯһ޴ĴȦһŰĴ㣬ķٿɴ1800ǧ/ʱڻе31м䣬һţˮǺ򻹴Ҳ̫ϵΨһӵŨǡ[53] ̫߿ǣ51118kmԼΪ65ھŴнľǺǡǵĴ83%⣬15%Ϊ2%ΪԼȲ̼⻯ϲļպ⣬ʹdzɫڹ̶γȼƲ㣬ľǺγ޵״ɫƲƽ¶Ϊ193϶ȡΪ8.681013102⁵kg൱ڵ14.63ܶȽСֻ1.24/ףΪֵܶ74.7%[54] ̫ĵڰ˿ǣֱ49532ǧס̫תĹ뾶Ϊ45ǧףתһҪ165ꡣǵֱƣԴһЩǺǵҪɷֶͺڲṹҲΪ˵һֵܡ[55] ̫ϵǿҵķ磬ʱٸߴ2100ƶ¶ǣ218 C̫ϵĵ֮һǺĵ¶ԼΪ7000 CԺ̫ıȽϡ1846923ձ֣ΨһѧԤмƻĹ۲ֵⷢǡ[56] ڤǣλںĿڲ࣬ǿ֪塣[57] ֱԼΪ237020kmǵֱ18.5%[58] 2006824գѧϻ24ͶƱٽͳŴ֮һڤΪǣ롰ǡͨľ涨ǡָΧ̫תԿ˷ʹԲ״ܹ塣̫ϵͳġŴǡУֻˮǡǡ򡢻ǡľǡǡǺͺǷЩҪڤ뺣ǵĹཻµǶ壬˱ԶΪǡ[59] ڤǵı¶ȴ-238-228֮䡣ڤǵijɷ70%ʯ30%ˮ϶ɵġرϹIJֿܸһЩ嵪Լ 򾭹򣬿ɼ 򾭹򣬿ɼ [60] Ĺһ̼ڤDZĺڰֿһЩлʻĹ⻯ѧӦڤǵĴҪɵһ̼ɡϡѹǿֻ΢[61] ̫ǣļ磬̫ܵϵһͨǣ෽涼Ƕһ޶ġ磬̫ϵΨһһ󲿷ֱˮǵǣҲĿǰ֪ΨһһڵM=5.9742 10^24 ¶ȣt = - 30 +45[62] ӢԱڡѧ־ϱ˵ûСײȿܾҸı价¼סʱ仹ʣԼ17.5꣬Ϊɵ仯һʱ䡣[63] ɻҳͱɵ̫ϵеһС壬˶[64] ѧʹ̽ǵĻѧзҪɷΪ顢⡢軯ͼȩѧҵó۳ƣǵζdz򡢾ƾͿʵζۺϡ[65-66] 67P/Ī-ϣſˡ 67P/Ī-ϣſˡ [67] ̫ϵΧһӴġ¶ơڷֲŲı顢ѩźʯеijЩ̫Ӱ̫ϵǡЩ顢ѩźʯ̫ϵڲ̫ĴʼӷǶһβͣԽ̫βԽԽԡ̫ϵڵǼʿռ䲢յģdz˸ӡߡͳ[68] һƲΪ̫50500ĵλһλ̫ϵľͷDZʲƬɵľ޻λںǹ֮⣬̫ϵԵ[69] ʶ ǣһźǶȹ׳ڡǽ׶ΣʱȱΪһźǡΪǡͻ޴ھǽ׶Σǵ͵ʮڱ֮ࡣΪ족ǣΪѸ͵ͬʱԽԽԶ¶Ƚ֮ͣĹҲԽԽƫ졣Ȼ¶ȽһЩɺǵ֮ĹҲúܴ󣬼Ϊһγɣͳǵһ׶ΰװǽ[70] װǣһֵ͹ȡܶȡ¶ȵĺǡΪɫʰɫȽϰС˱ΪװǡԶ۲⵽װ Զ۲⵽װ [71] װһֺ壬Сȵͣܶȼߡװеĺǵݻ·ߵյ㡣ںǽ׶εĩڣǵĻΪ¶ȡѹߺ˾۱ﵽ׶ζֹͣǵѹDzһܶȵ塣һ͵ȶװǾдԼ̫ȵԴܶȽǺͿǡװǵ1.4̫ôԭӺ֮ĵɳԶԿӻᱻѹԭӺ˶γǡԭӶ㣬Ʋڵλãһ˲Ĵ졣һʱģͿһ̶ȷԤʵҲһá˵еı־ģͣϾܸ޵Ĺ۲ƴճģͨΪع涨ֵ֡ĴСٶȣʹģͺʵȡһ¡ǣͺڣŹ۲IJϸĽλú˶IJԽԽȷ۲⵽ʵλͬģ͵ļƫ¶ˡǣŷ˵Dzûʶڵ˵Ĵɵģȴӱֵİ취ȵ˵ְ취ǿӦСӵ80Բؼǵ׼ȷλáⲻܲʹ˻ɵ˵ȷˡ16ͣڳĵض۵ĹϣȱͬʱѧߵĻϣڴˡ˵Ӵˣ˵𽥱̭ˡ򵥵˵,˵ԵΪ,˵̫Ϊġ༭ 1499꣬ҵIJǴѧ̽ʿص常һ常ߴ ˵ ˵ ޵£Ƿű̴õ̡ᵱʱסڽõĶ¥˿ԳڽĹ۲⡣Ǹʱŵ1500ǰϣѧܴģʽΪҾֹա¡ǺͺǾΧƵ˶Զλ̫֮⡣Ȼϸ۲⣬ѧǷйܵģʽǺϡһЩѧܵѧ˵ԭеĹС˸йһģʽÿǶһСԲУСŸǵĴƵԲ˶֮һģʽ©ԽԽԡѧģʽǾһһĹԲ˶áִ16͵ģĽܵIJȡһЩСڳ20ʱ᲻ҹǵλãõĽȻܵģʽûжٲ𡣸֪һŵϹ۲Щǵʲôġ룬ȷһͷУôЩǵпȥʲôأһԺˡһڲͬʱ䡢ͬľӵϹ۲ǣÿһǵͬʶ򲻿λǹġ20Ĺ۲⣬ᷢΨ̫仯ԡζŵ̫ľʼûиı䡣ģôľ̫ķֲʹţȷ˶ɺɡϵȻʱIJͲܲܵʱơѧIJԣͬʱڸijЩ۵ϣϵǴȱݵġָǾһСķΧڵģ˵ṹǽ֪̫ϵ̫ΪĵϵͳȻģͱı߽磬Ȼõġ족ȴһ죬رǷ⣬ʵźġǡȻֻܰνԲι˶ԸϵȻŲ塣ΪȻѧĵˣʷΰġȷϵģ֮һӶһѧϸԵĸ̽͹·ϵ̱ΰɾͣƽͨѧĵ·ҿȻѧǰʱӸʱ̻Ȼѧѧʼ÷ԾķչĿѧɾͣʱIJתƶʱķչ˳Ӧʱ仯 ʮ塢͵ŷޣǴӷ⽨ʱתĹؼʱڣһ䣬ᷢ˾޴ı仯14ǰŷޣķѵСǰųйҵرDzɿұҵķչӿ˵ĴУСǰɹҵơ 15ĩҶﶼ˻뼯Ȩľ塣ʱIJƷ򡢲ĴУҲֹҵʢijС1526鲢ڲĻɳѳΪһҪҵΡĻ͵ģ16ĩ˲ҵ׶ξñӦĻѧҲʼӳʱŷǡ̺һ͢ңʥΪϵΥʥѧ˵Ϊа˵ǷȨͳεˣԻ̡˵ʲ׼ΪԼͷչһԷ⽨ƶȺͽ̻˼Ķ˼ʹõսδѧȾ۵Ĺϣѧѧաŷ޵ո˶ոȷܿ󵽲ŷҡͬʱҵĻԾҲٽ˶ó׵ķչڡƽʹ£ŷðԶޡӡȼԶԶҪḻĺ͵֪ʶʵлĹ۲ϣʹǸеʱеġؾ춯ѧ˵ֵûɣҪǽһȥ̽ܣӶƽѧ͵ѧķչ1492꣬ĺҸײ´½׺ͬƵһܣ֤Բεģʹǿʼʶ[4] Ӱ ڽ̻ܿµͣҲҵڽ̸Ϊ̵ĺܶ岻ʥĽ̻壬̫̻ʵĸ־ԼѧҵɹԺܶͽʼ̵Ľ֯عʥжݿ˵İߡѧУ˹13691415꣩ھʿ̹ڽ̻ϹǴ־⽨̻Խݿ˵ѹȺͰȻ̻ᴦԻ̣ĸǿҵķӦݿũں˹˵¾壬˶Ҳ1517꣬ڵ¹·£14831546꣩Խ̻̻᷷ʹѡ1521꣬·ֶķϽ¶͢񣬲½̵š½̵Ľõҵ֧֣Ҳ



ʡйڴ龫񣬾ݲμijʡʿ¶Ѿʡ

һý""йý壬Ǵͳֽýý壬Ӧǵĺ࣬ĺ࣬ǵƶ˵ģЩⷽкͿܵý巢뵳ΥһЩýƣ죬Ҳһԭ򣬷ջػ߲Ҫ(˽⣬еʡѿʼջһЩ쿯)

ֵ͹ҵָ˼ëɫ,ԴҪ,ⷽ˼Ƚϻ,һЩһֱëʱ,ɢ۵,ë۹ö֮ýϳ֡ëΪָ˼ǵĹƶȹ涨˵,ǵʵѡ,ҵĻ,һЩܷ񶨵˵ġ

ע"Ա"ռýص⡣ν"Ա"ǼַҡԱЩ˱ǵģأȴΪҵ˵dz;еĻŹҽǵĹȴһǴ;лȴڱ壬Щ˲ܼý壬ܴӦ"ͻ"

ġýҪǿýҪҪѵͷԣҪֿ͹ʵԭҪ֤ؿ֮ϵҪḺ𣬱磬ýȫ汨涫ȴӶǿ͹ʵ?˶ڿɣë¼ϵϣȫֿ¼ȴƽܣⲻֵǷ˼?
塢ǿý۵쵼,Ҫ˲ץ𣬸УרҵģһҪѧȷ˼ʶȷλ"",˼Ϳҵ,ڸУ˲ŵɳɲУרҵȥУŽʦý뵳ڡ

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ֹý巴ëһ޲׼

лĻٿϣ"ë۹ö֮ýϳ"ս߽ҡ"Ա"˱λҪ

Ե͹ҡԾй˵һشϢһ쵳ʶ˷ηë۵ľ޴ΣԣȡĽѵʼʶ̬Ĺ

ܷ͵¶ë˼ָλ͹쵼ȷIJ͹涨,,άë˼ָλ,ά,ִܷ°µǰ,ͬʱҲϾҰԸ

θýԼĿ䣬ֹ״ֻڽǰųֹйѾ30ꡣ80ڣʲ׼ɻ˼ģ˼ԭľߣ漴Ϊ""۵ijֶԭΪһֽġëϣýΧ˷ɱë˼ֵ۵ۣеŽ͵㣬ִĺϷܵϾսҺҲѾ᧿Σ

ëйл񹲺͹Ҫߣΰ䣬ʼռᶨƵվڵϣΪıҸëȥ40󣬾йȻĸԭ뿪ë˼ͲйĵͲܵӵˣȫ干˱ѵʶëǷضë;ëǷ񣬷Ҳضë
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һ쵳ֹý巴ëȺڵĸģǴĵġǹֹëۻӦôĵë˼ΰãйʷֵۣ壬а콡ۻӪϵ۷Χǿʶ̬Ĺܡ

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