“速度密度关系”的概念、定义、翻译、参考文献-科学参考

单词	速度密度关系
释义	速度密度关系 Encyclopedia 工学交通流模型释 velocity-density relation速度密度关系速度与密度呈现线性关系。当密度从零逐渐增大，则车速从自由流速度逐渐减小；密度达到最佳密度时，车速为流量最大时对应的速度（最佳速度）；当密度达到阻塞密度时，车速为零，交通阻塞。
随便看	frequent pattern-based classification Frequent traffic congestion frequent urination Frere Mission to Zanzibar frescan frescoes at the Temple of Avalokitesvara frescoes at Xianyang Palace of Qin Dynasty Frescoes in Vatican Stanza della Segnatura frescoes on the walls and ceiling of Su Sixu’s tomb chamber frescoes unearthed at Eastern Han tomb of Luoyang petroleum station frescoes unearthed at Eastern Han tomb of Xingyuan Village, Yanshi City frescoes unearthed at Jiayuguan Wei and Jin tombs frescoes unearthed at North Qi tomb of Wanzhang Village frescoes unearthed at Prince Jiemin’s tomb frescoes unearthed at Tang tomb of Lü Village frescoes unearthed at the tomb of Xinmang period, Xincun Village, Yanshi City frescoes unearthed at Wei Jiong’s tomb frescoes unearthed at Xinmang tomb in Jingu Garden fresh agricultural products fresh agricultural products logistics fresh agricultural products logistics mode fresh air enthalpy control fresh air system fresh cocoon fresh cocoon quality inspection

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