и һ헺ҪĿc l(f)]ˣԇ͕pһЩСи ɣи
}һ}ӛ˹Pӛ]}Ŀӛ˹Pӛ]á
ܶ˶ӛ˺ܶPӛ}ĕrs֪ԓ߀ώnx헷ǵ҅sl(f)F(xin)]ôrgҁff@ô£νQ
1.WӛĹPӛ
ĹPӛӛey]зֶεR]c̖ߣѹPӛ Ūһӛ˺ܶ~һӵc]ӛֻ㮔r~RԼJRô@NrӛùPӛǟoЧ㲻֪ӛʲôҵĕr϶ҵôQDZMӛPӛĕrзֶRc̖ƽrӖԼWs
2.(j)xȥPӛ
҂l(f)F(xin)ʹfСԇ߀ ĕr@rƽrӖĿץPI~ıܾ͑ԓwF(xin)¿Mֻܑ{ܿץסXҪ~R ~R(@ҪƽreۣӖصԒÿᆖشӛImportantӛ)@rĹPӛҲnjƶǶ^y҂Ҫ}ɺxȥƹPӛķ(j)ŵλúx헵PI~RČȥҹPӛ
1)҂Ҫ}ɣ(j)}PI~ȥλPӛӛ}~Rôͱ^ȥλЩ}Ŀ@һ͉ˣֱҵͨ@ʧ
2)ʧ҂ҪҪؿPӛ]õMrgҪ_ʼxx헵ĕr҂Ҫ(j)Լ һЩƬϢƽre۵Իx헵߅߅ųF(xin)^~RĕrԭЛ]Ќ]оų@ЩϢ]ᵽԭ෴Pӛλòȵ
@rl(f)F(xin)һ㶼ų2߀ʣ2
3)ʣ@ɂ߀ЎN
a. xPI~_˼ȥPӛλҵ˼Čô@x헾njע˼Čһԭ~@Pӛ~RxбČҲܛ]ČֻҪӵĺ˼˾Ϳˡ@rcĿx(j)(jng)Ԓ}ܶԭ~ҲøĿԒ}xܶͬxČ
b. x~߀Ǜ]Ќ@rֻһУٌһɂxųһӲVܿ϶@һe`ϢxxN}xһ㶼Ȼ@NLUˣܱCٷְɶҲ] @һоֻ^҂мg!
}˺ܶζ18-22ַ(ni)˺ܾ ˺ܾã߀Dz
ЂͬWf 18Ȼf PIc˷@ӵԭ“] PIcЃɂԭ
1֪ PIcԾ͛]ӛPӛ;
2 Ǜ] PIc”ķN?
X18ֵrԓǃɷNе
һҪӖPIcһ㶼ʾ̖ҪʾԼ@ЩrcԅY
ڶҪ ԾӞλ ˼Ŀһһ䣬Ҳ2-3һץȡ˼ ҪѲJRĆ~ժ ǿƌW
һµʹԓǣ
1. Pӛ}ȫĵ߉ȫĵĴ ӛPӛҪܷͣӛҪc]ӛٷ@^@ǾģrץϢץҪc
2.x_x헌ԭĂ~ĂʲôǰǷʾe`xʲôeĂ~ReҪ
3. һһҪ 2-3 ͲҪ~R}ԭ һժ~^ȥҪMrg
4.ھ ^ҼС̖~߉磺actually, in fact, problem, special, but, however, evidenceȵ潛(jng)cһƪ¿Y10-20@ӵrl(f)F(xin) ͺB(yng)ϲg10ƪõrh15ǰ}Ŀ}Ŀ
5.Ҫ߷ٶ߀ֹͣr ȫƪcϢ@PI~ ץȡӵPI~˼߷ٶȺ;ʶÿһƪ͉
@ӈԳ1-20ƪTPOкܴի@
}и y҂ԓôk?
1.ҪM}z´ٰћ] һ¡@hhҪ м ˼֮gPϵ֮gPϵcʾ~ͺҪ PI~ҪҜʡ ֮ҪPI~ Ѿ ЄPI~һ PI~ ٶɂǻ
2.Ҫx헷һxeʲôʲôҪx߅ã@B(yng)_}˼·ÿεe}ҪΪe`ԭǛ] Ҋe?Լ͕ҵԼe`ʽ͕x헷ˣ}ĕr@_ҵ_
3.;Pӛ҂һֱ{(dio)ξӛٶ´`fҪ@ُ{(dio)һPӛless is more ԽԽӛúܶɶҲ] ᱾ĩ Pӛoþ ԽԽPӛԽԽPӛPI~ һǰ߾Ԕ
Y }--;Pӛ-- Һ˼PI~R--PI~ --x헷 (x헿ԷڵڶҲԷһ)eƽrXõһӏڿoB(ti)ZٿĕrRΣ(wn)l(f)]F(xin)ƽr_ʸץϹr
}ģи Pӛs̖
и PӛҪWs@Ӳ܉?q)ĉ?߀` (ni)ݡһ~R҂hȡǰ3-4ĸgoĸ磺meteoritesmete rt @ӾͲñbܶs̖F(xin)ڽo ؏ʱ^ߵĆ~ôǰÿs̖(ji)ʡܶrgϣ