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    늌ʃx֪R

    2014-08-20 09:21:21  Դ
    ˮČcˮֵСPֵܲֵСܾá(j)WķˮһrˮֵRСc늘OĴֱeFɷc늘O֮gľxLʽ
    R=ρ*L/F
    ʽR-λWķΩ1Ω=10^6μΩ
    ρ-ʆλWףΩ.M
    늘OĽeF1cm^2늘OgľxL1cmôֵ͵
    ˮʵĴСcˮк}Ķˮxӝxӵ늺ɔ(sh)Լxӵ\ٶPˮʺܴ󣬳ˮʾ͸ˮԽԽ
    2^ˮ늌늌ʺкPϵ
    ˮкиNܽ}xӵʽˮвһ늘Or֮ͨ늈£늵xӾͮa(chn)һƄˮxꖘOʹˮҺˮČď̶ͷQ늌늌ȣGʾ늌ӳˮк}Ķˮļ̶ȵһҪָˮԽ}ԽԽ늌ԽСˮ׺܌늌ĵ(sh)
    G=L/R
    ʽR-λWķΩ
    G-늌λTӣS1S=10^3Ms=10^6μS
    R=ρ*L/F,ʽ,tõ:
    G=I/ρ*I/J=K*I/J
    һ̶늘OvOgľx׃늘OeҲ׃LcFһ(sh)J=L/FJͷQ늘O(sh)ɵõ
    G=I/ρ*I/J=K*I/J
    ʽУK=1/ρͷQ늌ʣλS/cm1S/cm=10^3mS/cm=10^6μS/cm늌Kxǽe1cm^2LȞ1cmČw늌늌(sh)J=1r늌ʾ͵늌늌Dzͬ늽|ҺıF(xin)
    늌K늌Gρ֮gPϵ£
    K=J*G=1/ρ
    ʽJ늘O(sh)磺늌ʞ0.1μS/cmĸ߼ˮʑ飺
    ρ=1/K=1/0.1*10^6=10MΩcm
    3Μy늌늘O(sh)Ҫ(sh)MУ
    (j)ʽJ=K/G늘O(sh)Jͨ^y늌늘OһȵKCLҺе늌G˕rKCLҺK֪yrʃx(sh)o1.0cm^-1̎
    ڜyҺĝȺ͜ضȲͬԼyxľȺlҲͬ늌늘Oij(sh)JЕrF(xin)^`ʹһΕrg늘O(sh)Ҳܕ׃ˣُ늌늘OԼʹһΕrg늌늘O늘O(sh)œy˶늌늘O(sh)yrעŽc
    1yrʹõ늌ʃxҪ̖늌ʃx
    2y늘O(sh)KCLҺĜضԽӽHҺضȞ
    3y늘O(sh)KCLҺĜضԽӽHҺȞ
    4늌늘OҪKK늘Oܜyԇ늌ʵҺ᣿
    늌늘OʹõвͨKKھKһӺɫɵĽKĿǞ˜p٘OЧ׵K늘OıeܶȜpСǘOЧ׃Сݸɔ_ҲKڻ僵òõK늘Oa(chn)ܴĜy`K늘OgҪsˮв˸ɷl(f)F(xin)K늘OȾʧЧɽ10%}ҺжȻsˮ_ϴɃڜyK늘OҲ僣KҪһҪͽ(jng)K僵úcČ늘OкܴӰ
    ڇһЩ늌늘O늌ʃxfK늘OһN`⣬JK늘Omڸ늌ʵҺʹ䌍ȻK늘OyԇׂμS/cm0.1μS/cmҺڸ늌ʵҺеĜyԇK늘O͸(wn)͜ʴ_˳(sh)1늌늘OԓʹK늘OKڵĹ늌늘Oֻ^С늌ʵҺʹԳ(sh)С1늌늘Oʹù늘O늘Oһ(yu)cKƬԲK늘Ot^ܲãֻˮл΄ϴ
    5늌늘OЩNкβͬ;
    늌늘Oһж늘OʽͶ늘OʽN
    늘Oʽ늌늘OĿǰʹ*늌늘Oʽ늘Oʽ늌늘OĽYnjƬKƬYڶƽвƬϣAβƬܵăȱ{(ji)KƬe;xͿƳɲͬ(sh)ֵ늌늘OͨK=1K=5K=10ھ늌ʃxʹõĶ늘Oʽ늌늘O(sh)ƳɈAΌQ늘OK=1rʯīK=0.10.01rϿDzP䓻⁺Ͻ
    늘Oʽ늌늘Oһ֧wЎׂh(hun)늘Oͨ^h(hun)늘OĴ“(lin)Ͳ“(lin)IJͬMƳɲͬ(sh)늌늘Oh(hun)늘OIJϿʯīP䓡⁺ϽK
    늌늘O߀늘Oͺ늴ʽ늘O늌늘OҪ(yu)cǿԱ늘OOĜy`ڇČʽھʽ늌ʃx^ʹá늴ʽ늌늘Ocmڜy늌ʵҺһڹI(y)늌ʃxyԭƳɆνMֵĝӋ}ӋӋȡ
    6늌ʃxĽYԭʲô
    늌ʵĜyԭ䌍ǰWķɜyƽ늘OgҺֵ衣ͨ^늘Orl(f)߀ԭĶ׃늘OҺĽMa(chn)“O”F(xin)Ķ늌yć`ølʽ늜yԜppOF(xin)늘O߀ԭѸٽMYJ]߀ԭl(f)
    늌ʃx늌늘OӋԪMӋmlʵĽ̖ķ̖Ŵ̎Q늌Ӌ߀bcƥĜضȜyϵy(tng)a?sh)˜ʜض늌ʵĜضaϵy(tng)ضϵ(sh){(ji)ϵy(tng)Լ늌س(sh){(ji)ϵy(tng)ԼԄӓQܵ늌늘OЕr߀bПԪ
    7늌ʃxЩN;̓(yu)ȱcʲô
    늌ʃxʹ;ִйPΡyʽI(y)ķN͡
    P늌ʃxһƳɆһ̣yM錣úxP߀ƳTDSӋڜy
    ˮ|}ӋyҺ}ȵ
    yʽ͌늌ʃxy^VÃxͬcDZyʽֱɔyF(xin)늌ʃxyVܶyȸ
    I(y)늌ʃxcҪ(wn)ԺɿһĜyh(hun)mɔ_ģMݔ(sh)ͨӍވ󾯺Ϳƹܵ
    8νx늌ʃxľ_
    늌ʃxľ_õ`njxеĝM̶ֵ`ٷֱ҂1.0늌ʃxľ_ָ˞飺`±1%F.S±1`±1.5F.S±1֣ʲô˼`ָ늌ʃxӋֵ``ָӋ늘Oʹõ`F.SָӆԪ֙nĝM0.0—199.9μS/cm̙nf`±1%×199.9±1≈±2.1μS/cm`±1.5%×199.9±1≈±3.1μS/cm±1ָxֱʵ*һλ(sh)늌ʃx`njһ̓ԵcHʹеĽ^`Dzͬ@һcҪע⣬yԇһˮ늌ʃxֵ10μS/cm㲻3.1μS/cm`ֵһЩ֓Bm(x)̶ȵăxһ㶼`ĸmVӋҲ
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