и һ헺ҪĿc l(f)]ԇ͕pһЩСи и
}һ}ӛ˹Pӛ]}Ŀӛ˹Pӛ]á
ܶ˶ӛ˺ܶPӛ}ĕrs֪ԓ߀ώnx헷ǵ҅sl(f)F]ôrgҁff@ô£νQ
1.WӛĹPӛ
ĹPӛӛey]зֶεR]c̖ѹPӛ Ū졣һӛ˺ܶ~һӵc]ӛֻ㮔rˣ~RԼJRô@NrӛùPӛǟoЧġ㲻֪ӛʲôҵĕr϶ҵôQDZMӛPӛĕrзֶRc̖ƽrӖԼWs
2.xȥPӛ
҂l(f)FʹfСԇ߀ ĕr@rƽrӖĿץPI~ıܾ͑ԓwFˡ¿MУֻܑ{ܿץסXҪ~R ~R(@ҪƽreӖصԒÿᆖشӛImportantӛ)@rĹPӛҲnjƶǶ^y҂Ҫ}ɺxȥƹPӛķŵλúx헵PI~RČȥҹPӛ
1)҂Ҫ}}PI~ȥλPӛӛ}~Rôͱ^ȥλЩ}Ŀ@һֱ͉ҵͨ@ʧ
2)ʧ҂ҪҪؿPӛ]õģMrgҪ_ʼxx헵ĕr҂ҪԼ һЩƬϢƽre۵Իx헵߅߅ųF^~RĕrԭЛ]Ќ]оų@ЩϢ]ᵽԭ෴Pӛλòȵȡ
@rl(f)Fһ㶼ų2߀ʣ2
3)ʣ@ɂ߀ЎN
a. xPI~_˼ȥPӛλҵ˼Čô@x헾njġע˼Čһԭ~@Pӛ~RxбČҲܛ]ČֻҪӵĺ˼˾Ϳˡ@rcĿxԒ}ܶԭ~ҲøġĿԒ}xܶͬxČ
b. x~߀Ǜ]Ќ@rֻһУٌһɂxųһӲVܿ϶@һe`ϢxߣxN}xһ㶼Ȼ@NLUܱCٷְ١ɶҲ] @һоֻ^҂мg!
}˺ܶζ18-22ַ˺ܾ ˺ܾã߀Dzߡ
ЂͬWf 18Ȼf PIc˷@ӵԭ“] PIcЃɂԭ
1֪ PIcԾ͛]ӛPӛ;
2 Ǜ] PIc”ķN?
X18ֵrԓǃɷNеġ
һҪӖPIcһ㶼ʾ̖ҪʾԼ@ЩrcԅY
ڶҪ ԾӞλ ˼ĿˡһһҲ2-3һ𣬾ץȡ˼ ҪѲJRĆ~ժ ǿƌW
һµʹԓǣ
1. Pӛ}ȫĵ߉ȫĵĴ ӛPӛҪܷͣӛҪc]ӛ£ٷ@^̡@ǾģrץϢץҪc
2.x헡_x헌ԭĂ~ĂʲôǰǷʾe`xʲôeĂ~ReҪʡ
3. һһ䣬Ҫ 2-3 ͲҪˣ~R}ԭ һժ~^ȥҪMrg
4.ھ ^ҼС̖~߉磺actually, in fact, problem, special, but, however, evidenceȵ潛cһƪ¿Y10-20@ӵrl(f)F ͺB(yng)ϲg10ƪõrh15ǰ}Ŀ}Ŀ
5.Ҫ߷ٶ߀ֹͣr ȫƪcϢ@PI~ ץȡӵPI~˼߷ٶȺ;ʶȡÿһƪ͉
@ӈԳ1-20ƪTPOкܴի@
}и yˣ҂ԓôk?
1.ҪM}z´𰸣ٰћ] һ@hhءҪ м ˼֮gPϵ֮gPϵcʾ~ͺҪ PI~ҪҜ ֮ҪPI~ Ѿ ЄPI~һ PI~ ٶɂǻ
2.Ҫx헷һxeʲôʲôҪx߅@B(yng)_}˼·ÿεe}ҪΪe`ԭǛ] Ҋe?Լ͕ҵԼe`ʽ͕x헷ˣ}ĕr@_ҵ_
3.;Pӛ҂һֱ{ξӛٶ´`fҪ@ُ{һPӛless is more ԽԽӛúܶɶҲ] ᱾ĩ Pӛoþ ԽԽPӛԽԽPӛPI~ һǰ߾Ԕ
Y }--;Pӛ-- Һ˼PI~R--PI~ --x헷 (x헿ԷڵڶҲԷһ)eƽrXõһӏڿoB(ti)ZٿĕrRΣ֣(wn)l(f)]Fƽr_ʸץϹr
}ģи Pӛs̖
и PӛҪWs@Ӳ܉ĉ!߀` һ~R҂hȡǰ3-4ĸgoĸ磺meteoritesmete rt @ӾͲñbܶs̖Fڽo ؏ʱ^ߵĆ~ôǰÿs̖(ji)ʡܶrgϣ