“velocity-density relation”的概念、定义、翻译、参考文献-科学参考

单词	velocity-density relation
释义	velocity-density relation 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	combined classification of documents and archives combined cleaner combined compressor combined concentrator of multiple departments combined cooling combined cooling,heat and power combined cooling, heating and power combined cycle combined cycle of gas turbine combined cycle of power and cooling energy combined cycle with boiler feeding water heating combined cycle with pressurized combustion boiler combined derivative spectrophotometry combined development of open pit combined development of underground mine combined diffuser combined direct and transfer translation approach combined disconnector combined dispatching of ground water and surface water combined distribution systems combined drill combined echo ranging echo sounding combined electrochemical machining combined engine inlet combined environmental test

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