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    ʲôDZƵ
    Դʢ\  ʱ䣺2010-12-21  ˣaxfan

    йӱֱ www.laakz.com ʲôDZƵ
    򵥵˵ƵDzñƵƼƷ
    һ֪ӦӦͨԻеõĵõԼռȫܷ20%ڹķȷ豸ƹܼȡĵڷʽʹʼմڿѧ״̬ҵۺϾЧЧʮҪ
    ͳƾʽõͣȷʽ޷γɱջ·ҲϲʡĹƲֱӻY-޷𶯵Ĺеϵͳ𶯼ϴҪĵԴϵ͵Ҫ
    ѧԭ֪תټٷת½ʱ綯빦Ѹٽ½80%ʱתҲ½80%Ṧ½ʵ51%½50%ʱṦʽ½20%ñƵı綯ƵʴӶı綯תﵽڿĿձ仯ҪֽʡһٶõѴʩ
    ڵԭκýӦ綯Ϊʽе綯Ĺǰ󸺺ڶѡʱ󲿷ֲ綯ѹٶȶغСҲкܶʱɵƺԿ֪綯ֻʱЧCOS״,ʱʱ0.3಻Ҫĵ
    ڲü⸺شСķݸصļʵͶӵѹЧΪʱӵйСҪŵ޹ COSܵռҪɷݵǶѹһûмЧʺܵʵͶӵѹӸӦƹʽ U1≈E1=4.44F1N1KN1m: U1—ÿ鴮KN1ʱӵСԺԶ©迹ѹU1≈E1ʱͶӵѹU1m½,Ҳ޹IMҲɱ½ӵе޹COSʵƿԽӽֵģPFel= pFeIN ×(U1/ UIN)2УPFel—pFeIN —ӶUIN —Ӷ˵ѹ?Կ?U1½PFelƽѸ½ʱռҪĵĴʹЧʴؽѹڵĵٽܸݿɱٻеƶ Q∝nM∝n2P∝n3УQ—n— õתM—תP—ṦͨҪı为ʱõŵʱ빦ʱ仯ѹʽڵܺĴҵĥ׻Ҳ湫ʽɼֻҪınQɱ仯ﵽQĿṦʿɴQ’=1/2P’=1/8×PϹʽΪʱ12.5%ܽܣڵ磩80%ȻҪСЩʹ“ת”ʵĻеʽѹõٸı为ҲԵĽЧΪٺñƵ٣еĶĶתٷ½ЧʶȻекܴ𶯽ͨӦ綯ֱӽ𶯵ķ綯𶯵Ϊʱ5~7ĴԵҲеĥ񶯶ñƵԽ𶯵ƵСҲֻҪȶԴͿĴ󽵵ȲֲеCOSƵĺôñƵڱƵֱĸʹĹӽڵ綯޹ɵṩԽʡܴһһɽʡ30%Ժܶҵд豸бƵٸӲ豸
    Ʒص
    * ʡԴԼɱڵʴﵽ20%
    * ߵʡ͵زװɽϴȵ
    * ƽʱĴʱ120%
    * е˶ĥ̶ӳʹ
    * Ƶ?Աܱ֤豸ȫ?
    * 豸½ɿٱƷά޳ɱ
    * ܿǿԱ书ʱ̬ԶӦعı仯˹
    * еڵлѹˮܿƽڵƵеڵתڵлеӰ豸
    ÷Χ òƷ㷺ڹҵů¯ˮ೧¯Ҥúұҵ¯ת¯ʳҩˮʯͻ֯еˮˮ˾ѹյҵҵͳϵʽܴķѹıDZˮѭDZˮͱѹעˮõ豸ıƵټٺѹڿƵ

    ȼ¯ϵıƵDzñƵƼƷͨڹ¯̵ϰװO2COݴݶԱȺͷڷDZƵ˺ĵЧҪDZƵȻȫȼԼȻ
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