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1.Ԥб൱бϡԤȡκηáֻҪԤ֮յԤɹţƵͻ䡣ȥֱӵƵ޷뷳ա2.дԤʱע 1Ԥʱÿṩһס˵ԷƵҵԤӶס 2дס˼ϵϢʱṩ˵ʵϢԱԤȷϹκ⾩ʱ

1ʲôǴ˷գھƽ̨С˷աʶɵ̼ƷƷ˻ڣۺ̼ͬ˻ѡȡмĻء̼ҡ˻Ʒϴݵţ̼ȷջ󣬱չ˾ˣͨָտ˻Ԥ72СʱˣʵʵʱΪ׼ʱע˷δʱˣɲ򡭡

һӪƷ˷ȡ׼һͷþȫӪƷ˷Ǹݶʵػۺϼģȡ߼˷ѣÿͷʽȡͷҲͬ˷Ѽ߼˷=˷+˷ʽͣ1ʵأKG=Ʒ2أKG=Ʒ(CM)*(CM)*ߣCM/ϵ һַӳܶȵļķʽ͡

һ֧̣һ֧ʽЩ֧1ѡڶʹʱѡֽPOSˢ֧Ʊʽ֧ͨAPPֻͻ ɨɨɨϵĶ뷽ʽֻɶ֧ɨ֧ɲ鿴˵2֧ѡ֧롰ҵĶʾвĿǰ֧֧ҵɡ

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