Rt=3179.5
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35һನΣйIEC涨4ָ1s/20s4s/10s,8s/20s30s/80sڶ涨ijηֵʱ涨Ϊ500s1000s2000s2000s3200s֮䡣 36һѹĵֱͨѹ磬ʱΪʮ뵽֣Ȼͨ϶ĻضƷŵ磬ӶƷ
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38涨ϿɵijѹϵͳڲǰʱΪTfѹʱĹºͲֽԾӦʱT TfıֵӦͼ9-13еķΧڡǰضϲʱҪһҪ⣬涨ʵԾӦʱTNͲӦʱTӦһҪT??0.03Tc?TN?0.03TcDzѹʱҪIJӦʱ
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nһֵʱnҲѹӣԪṹ߶ȥn
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84310m/s
2C
3B
5λȵL0͵C0
6һ
13/14ҳ
7ߵ·Եص絼 صεӰ ͵еֵȵӰ 81ܦ¡ʴ
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14/14ҳ