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ʱ:2013-08-07 23:03Դ:Office̳ѧϰ www.office68.com༭:

ȸƴѹƴQQƴϹƴ΢ƴ……Ϊʲôڴ뷨ǻƴ뷨

ȿgoogleоԱũһɴϼһҪöٴμ

Ǽٶõĺڶ棬һ 6700 õĺ֡ǺƵʵķֲüϵ 26 ĸԺֱ룬ĸֻܶ 676 ֱ룬 6700 ֱҪĸϣ볤ΪȻĶϷǿԶԳý϶̵ıԲýϳı룬ƽÿ ֵı볤ȿ̡ǼٶÿһֵƵ
p1, p2, p3, ..., p6700
DZij
L1, L2, L3, ..., L6700
ôƽ볤
p1×L1 + p2×L2 + ... + p6700×L6700

ũһָijȵСֵǺֵϢأҲ˵κ뷽治ͻϢظļޡȻũһбģ ǺġҪָǣǽ뷨ֿӶչֿ GBKں治Ƶʽ϶̣ƽ볤ȱԹĴ˶١

ÿһֽͳƣҲԣ¿ԹֵʮڣȻȡʲôϿơǼٶ뷨ֻ 26 ĸ룬ôÿĸԴ log26=
4.7 صϢҲ˵һƽҪ 10/4.7= 2.1 μ

ǰѺɴʣԴΪλͳϢأôÿֵƽϢؽ١ƽһֿ㼸μ̡Ǵʵ ԣԴΪλͳƣֵϢشԼ8ãҲ˵ԴΪλһƽֻҪ 8/4.7=1.7 μ

뷨ǻڴԭ򡣵ȻٿĵԣԺィһڴʵͳģͣǿԽÿֵϢؽ 6 ãʱһֻҪ 6/4.7=1.3 μһ뷽һ㣬ôֵѾӢĿĶˡ

ο뷨Чʵԡ

ǿ˽⵽һֻҪ 6/4.7=1.3 μǣʵûһ뷽ӽЧʡҪԭȣҪӽϢ۸ޣҪԺֵĴƵ롣ʵ 뷽ôֻǵһûжԴͳһ룬ڶûЧģֱ͡뷽ϽЧʵϲʵáԭ һѧڶ֪ѧĽǶϽһ޶ãûиӱд²̫ڻÿʸӵıͬʱֲж˼άǹȥ оʶʱܶûԣʹøָӱ뷨Ѹʱٶֻڿʱһ뵽ķ֮һˣȻÿƽü ٣Ǵ̵ٶҲ˺ܶ࣬ܵIJ졣ҲΪʲôƴļ뷨ռͳελԭʵϣȫƴƽΪ 2.98ֻҪƴ뷨ij׽һֵ⣬ƽÿüӦңÿ 100 ȫпܴﵽ

ȸƴ뷨ԳΪƽ뷨ȸ蹤ʦԸϣûܲ뷨ĴڡӢκһֻQWERT Y̶룬Ҫи빤ߵĴڣ׼ȷ100%ĵΪʲôҪʱĿİҪﵽ"뷨Ĵ"ռĿ꣬ڼϻ൱Ѷȵġȸƴڵ뷨ƷΰĿǰ»ڳ׶Ρʱڽѧڷչƴ뷨һõδ

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