ľи֣֮_ʼĕrһ~һ~ȥ ؿһȺһȺȥ ٺһһӵȥ (dng)Ȼһ͕ӛ ӢZMֻһһ˼@ hZһ҂āȥ“ hZ”@һN“”ľ硣_@N磬ôи ̾ͳ҂СW(xu)ƌW(xu)nԇO了Ρ
һЇЌW(xu)W(xu)Ȼ^ˁfhh_@Nġڜʂи ĕr҂ҪĹnǽQӢZıָ һ~ܷ(yng)˼ɞķeO X~R
QЧăɂһ Ǿ
1.
ָnjһƪ еԭȫ ڜʂиԇĿõ ϾеĶ Чؙzһ˵ı ֮_ı(f) ֱȫ ֹ@ Чķ
2.
ָһ߅_ıһ߅ ĕrҪԼϤĆ~ڵһY(ji)~Ȼٷ(f) ֱÓ ֹ mϵIJSSS(Scientific American’s Sixty-second Science)dẓֻһϢܴҪи }ҪԴ