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共找到 4643 与s为0 相关的结果,耗时341 ms rss sitemap
冰期相对水深0.0,0.2,0.4,0.6,0.8,1.0的测点流速分别为0.30m/s,0.42m/s,0.40m/s,0.31m/s,0.19m/s,0.06m/s,则该垂线平均流速为()m/s。A、0.31B、0.30C、0.29D、0.28
某垂线用五点法测得流速分别为V0.0=0.58m/s,V0.2=0.58m/s,V0.6=0.55m/s,V0.8=0.48m/s,V1.0=0.36m/s,则其垂线平均流速Vm=()。A.0.51m/sB.0.52m/sC.0.53m/sD.0.55m/s