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The ratio of sample size to population size.
中文意思:
抽样规模与人口规模的比率.


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The ratio of mobile group data users among all mobile telephone users increased from the 18.0% measured during the end of last year to 26.4%. 移动分组数据用户在移动电话用户中所占比重从去年底的18.0%上升到26.4%。
The ratio of nursing staff to doctors is 2:1. 护理人员和医生的比例为二比一。
The ratio of outpatient to inpatient cases was highest among young women (ranging from 5 : 1 to 6 : 1). 年轻女性中门诊患者对比住院患者的比率最高(为从5:1到6:1)。
The ratio of output power from an amplifier system, to the input power. Gain is normally measured in decibels. 放大系统的输出功率与输入功率之比,增益通常用分贝表示。
The ratio of primary,secondary, and teriary Industries is 20.5:49.6:29.9. At the moment, the primary and tertiary Industries are the major powerhouses promoting economic growth. 三次产业结构调整为20.5:49.6:29.9,工业和服务业(第三产业)是推动全市经济增长的主要动力。
The ratio of sample size to population size. 抽样规模与人口规模的比率.
The ratio of schoolboys to schoolgirls is 2 to 1. 男学生和女学生的比例是2比1。
The ratio of the diameter of nozzle to the diameter of vessel has greater effect on the distribution area of high stress in plastic deformation stage. 对于均处于塑性阶段的结构而言,开孔率的大小对高应力区的分布范围影响较大。
The ratio of the energy yielded by a given amount of ethanol to the energy needed to produce it is called the “energy balance”. 用“能量平衡”来表示一定数量的乙醇与制造其所耗能量的比率参数,从蜀黍提炼乙醇“能源平衡”值说法尚未一定。
The ratio of the magnitude of an applied shear stress to the velocity gradient that it produces; that is, a measure of a noncrystalline material's resistance to permanent deformation. 剪切应力数值与其产生应变速率的比值叫粘性,用来衡量非晶材料抵抗永久变形的能力。
The ratio of the numbers of ions outside the match radius to the total ion numbers, not root-mean-square radius or others, is selected as variable to simulate the control of beam halo-chaos in high intensity accelerator. 摘要文章改变以往习惯于以离子束均方根半径等为控制变量的束晕-混沌模拟控制方法,取匹配半径外离子数与总离子数之比为控制变量,并构造一对数函数控制器,以进行束晕-混沌控制的模拟研究。
 
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