查询词典 population mean

At baseline, the study population had a mean age of 62 years and diabetes duration of 5 years.

在基线时，研究人群的平均年龄是62岁，糖尿病病程是5年。

The model of programmed crystallization of SPM was proposed based on the moment transformation of the population considering the agglomeration. The optimal temperature-time curves in a batch crystallizer which maximized the terminal mean size and mean weight size can be determined from the application of the Pontryagin Maximum Principle. The calculated crystallization results heating under optimal temperature were compared with ones under linear or natural heating temperature.

根据第四章所得到的螺旋霉素晶体二次成核和晶体生长和布朗扩散引起的聚集动力学，利用第六章所描述的晶体尺寸分布的各阶矩对时间的一阶导数所构成的自封闭的一阶常微分方程组，采用庞得里亚金极大值原理，以温度为控制变量，在满足某些约束条件下，以最大平均尺寸和最大晶体重量平均尺寸为性能指标，计算出了螺旋霉素间歇结晶的最优温度—时间曲线，并同线性加热和自然方式进行了比较。

As far as the quality of the population is concerned, they normally take the mean of population only.

不过有关母体优劣的界定，仍多著重於以母体平均数作为考量的标的。

A simple example is calculating the mean of two population counts made 10 years apart to estimate the population in the fifth year.

一个简单的例子是计算相隔十年的两次人口普查之间的平均值，从而估计第五年的人口。

A simple example is calculating the mean of two population count s made 10 years apart to estimate the population in the fifth year.

一个简单的例子是计算相隔十年的两次人口普查之间的平均值，从而估计第五年的人口。

Population growth need not mean limited resources any more -- rather that very growth of population now means an improvement of resources.

人口增长不必再意味着资源的限制——相反，如今人口的增长意味着资源的增值。

It does not mean the population of the poor; it means a supplementary part, an empty part that separates the political community from the count of the parts of the population.

这意思是说，我们这时代的新冒出来的政治主体，会冲击已存在的政治主体群，而这是"民主"的实质过程。

Results:(1) The mean BMI of patients except for women aged from 20 to 29 years, was much higher than that of the general population (P.01).(2) The overweight (BMI≥24) ratio of the patients was much higher than that of the general population (P.01).(3) Patients with hypernormal BMI were more than those with normal BMI (BMI4) except for patients aged from 20 to 29 years.(4) Patients with hypernormal BMI were significantly more than those with normal body weight in all other occupations except for young students.

结果：①除了女性20岁～29岁年龄段外，其余各组患者体重指数的均数均明显大于中国普通人群体重指数的均数（P均＜0.01）；②本组患者中男、女性体重指数超常者(BMI≥24)所占的比重，均明显大于中国普通人群中体重指数超常者所占的比重（P均＜0.01）；③除了男、女20岁～29岁年龄段以外，其余各年龄段的患者中体重指数超常者所占的比重，明显大于体重指数正常者(BMI4)所占的比重；④除青年学生外，其他职业中体重指数超常者所占的比重，明显超过体重指数正常者所占的比重。

There was a stable and relatively low expression level for Lbα1 and a progressive expression pattern for Lbα8 among the 1st,2nd,3rd,and 4th nymphal stages.5 Development and reproduction of L.decolor as a function of temperatureThe developmental rate,survival,intrinsic rate of increase,net reproductive rate(R_0),mean generation time,and population doubling time of L.decolor population were evaluated at eight constant temperatures.

Lb a1在1龄、2龄、3龄、4龄若虫及成虫中的表达水平分别是Lb a8的2.03、2.55、4.77、6.54、和5.28倍，且它们之间的差异均达到显著水平(P＜0.05)。5温度对无色书虱发育和繁殖的影响通过比较无色书虱在不同温度条件下的发育速率、存活率、内禀增长率等生命参数以明确无色书虱在不同温度条件下的发生发展规律。

The self-thinning rule, a universal biological law in an even-aged plant population, describes decreasing processes of population densities at -3/2 power of plant mean weight on log-log graph.

自然稀疏法则描述在对数座标系上种群密度按植物平均重的-3/2乘方减少的过程。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐