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Դ ʱ䣺2018-12-04
ҪĽжʽIJҪ˽⶷ʽĸֲ衣˵ʽжطʽλǾҪϸĽ˽⡣ʽһͷжأжطʽҪʽʽʽ֡Сϸжط

˽жطʽҪ֪϶ֲ洫һתʱͬʱܵmgmrw2ãǵȫNʼ봫۴ֱ߽һPΪPPĵľhΪࡣжطʽĻ֣ǸݼhĴСбģ϶Եĵİ뾶Ϊr1ְ뾶Ϊr2,

ʽжأ϶Ͽ϶ڱƶϿӰжʳʽжء

ʽжһǣҲ𽺴ʱӦ𽺴ʽжص£϶ǣϿܼûϡ貼ãڶѻܶȴĥԵϡѡٶȽϵͣһȡ0.40.8m/s

ʽжأ϶϶ƶӰ׳ʳʽжء

ʽжضýǣ϶Ϊϡ貼ãҲܼãõķĩ״Сϣٶȿȡ13.5m/s

ʽжأֵֵС϶һ϶жһ϶ڱжʳƻʽжءǣ϶ϡ貼ãԲõķĩ״ˮϡٶȽ֮䣬ȡ0.61.6m/s

ƪ£ŸǶʽʽʽֶʽжطʽȫµ˽ˡʹöʽʱҪʵѡʵжطʽȻԻкܴ𺦡ϣСΪ¶

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