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Ƶ౦౦ҳ߷̻ӭ
621    ʱ䣺2018-9-26

ݱ׼Ķ壬ĿǰҵǰΪĸȼͨһնȾ0.1lux;նȷΧ0.1lux0.01lux֮һ㱻Ϊն;Ϊ¹⼶նȷΧ0.01lux0.001lux;նȷΧﵽ0.0001luxʱ򣬱ﵽˡǹ⼶ijննȡʲô?նΪƣĿǰҶƳɫIJͬλĵնôնȵļչ·ߺעҪЩ?

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ͷĹȦСfֵĴСֱӾ˲Ʒļ۸񡣹ȦԽfֵԽС۸Խ;֮ȻһҪͷȦf=0.9ڵǹ⼶һҪͷȦf=1.2ڵǹ⼶ѡĸƷ?ûش𣬵ǻַʽʣһ۸2Ԫǹ⼶һ۸ֻҪǧԪҵ߹޲죬ֻоͷͬͻѡߡireעĵնȲƷΪ?شȻǷ񶨵ģΪ⡱Ŀڻһͷѹš
Ƶ౦౦ҳ߷ӭ磬2013415շIJʿɰǶʶʶڶ౨ͷв׽˷˵Ӱ񣬵Щϵͳȴ޷ȷϷˡȻЪѧеһʶϵͳУnecȽneofaceʶʹ뾯ͬ¼ֳƬ˲˷˵ġͬһƥȶԡżĽһͬȵߣʶԽԽĹעΪʹõʶʶΪʷֺͰȫҪֶ֮һ


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