Key city's centricity is reflected by both population density and proportion of people whose occupations have motive function, while industry structure is the key factor to influence centricity.
一个城市的人口密度，从事具辐射功能行业的人口比例等均能反映其中心性的大小，而行业结构则是影响中心性的关键因素。
Major physical characters such as egg shape index, shell thickness, the proportion of each component of egg to total egg and density are analyzed for the breed eggs of Taihe silkies in this paper.
对泰和乌骨鸡种蛋的主要物理性状指标如蛋形指数、蛋壳厚度、蛋的各组成部分在总蛋质量中所占的比例以及蛋的密度等进行分析。
Communication range increases, the traffic density increases and improved the proportion of vehicles with communication capabilities will increase the success rate of information transmission.
通信范围的增大、车流密度的增大和具有通信能力车辆比例的提高都会增加信息传递的成功概率。
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