population estimate的例句大全

If competes places that the audience population estimate is horrible to look.

如果比赛放在那,观众人数估计更是惨不忍睹.

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I don't have any reliable numbers for global mole population ( or small mammal biomass in general), but we'll take a shot in the dark and estimate that there are at least a few dozen mice, rats, voles, and other small mammals for every human.

我手上没有全球鼹鼠数量（或者小型哺乳生物的总体生物质量）的可靠的数字，但我们不妨认为小鼠、大鼠、田鼠以及其他小型哺乳动物的数量约为世界总人口的几十倍

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Comparative Research of Several Kinds of Methods on Density Estimate for Biological Population by Line Transect Sampling

对于测线调查样本的生物分布密度推定的几种方法的比较研究

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This is a conservative estimate of the population in the year 2000. It is conservatively estimated that not less than half a million people died in the famine.

这是对公元二○○○年时人口的保守估计。据保守估计，死于这场饥荒的人数不少于50万。

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investigations on the structure of spawning population of chinese sturgeon ( acipenser sinensis gray) and the estimate of its stock

中华鲟产卵洄游群体结构和资源量估算的研究

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The Interval Estimate of the Difference of Two Population Mean Value

两个母体均值之差的区间估计

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This article makes an analysis and estimate of China's current total population using the 4th population census data and statistics from the household registration departments.

几年来，关于中国人口总量一直是社会上关注的问题。本文利用中国第四次人口普查数据、户籍部门统计的数据等，采用人口增长分析技术，对当前的中国人口总量进行了分析和测算。

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Thus, the purpose of inferential statistics is to predict or estimate characteristics of a population from a knowledge of the characteristics of only a sample of the population.

因此，推理统计学的目的就是通过了解一个群体中一些样本的特性，从而对整个群体的特性进行推测和估算。

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The global population is expected to grow to 9 ． 6 billion by 2050, and some analysts estimate that food production will need to be raised by 50 percent to maintain current levels ．

预计到2050年,全球人口将增长到96亿,一些分析人士估计,粮食产量需要提高50%,才能维持目前的水平。

高考真题- 2018 天津 阅读C

Some scientists estimate that at its height, Easter Island's population may have been as much as20,000 people.

一些科学家估计，在最鼎盛的时期，岛上人口曾一度多达20000人。

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Objective To estimate the population size of men who have sex with men ( MSM) using a multiplier method.

目的通过乘数法估算中国男性同性恋人群规模，为艾滋病疫情估计及防治工作提供依据。

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back in the 1970s, some scholars tried to estimate the "optimum population" for particular countries, but most gave up.

追溯到上世纪70年代，当时一些学者试图估计出特定国家的“最优人口”，但大部分都放弃了。

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a method for weighted data fusion to estimate the population mean-value of random variables

估计随机变量母体均值的加权数据融合方法

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estimate the population mean weight using the sample mean weight

利用采样的平均重量估计人口的平均体重

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to estimate genetic variation in spotted halibut, we analyzed 21 microsatellite loci in 30 individuals of one wild population.

随后用21对微卫星引物对一个野生圆斑星鲽群体（30个体）进行遗传多态性检测。

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and meanwhile, habitat selection index model was used to estimate the foraging habitat of reed parrotbill population in winter.

同时，运用HSI（生境选择适合度指数）模型，对震旦鸦雀冬季种群的觅食生境进行了初步评价和探讨。

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Objective To estimate population attributable risk for environmental risk factors in the development of gastric cancer.

目的分析胃癌的环境危险因素并进行归因危险度评价.

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Without clear information on nesting, it has been hard to estimate the population of marbled murrelets.

由于没有关于巢穴的确切资料, 很难估计带大理石条纹的小海鸭的数量.

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In a simple random sampling, the sample mean is an unbiased estimate of the population mean.

在简单随机抽样中, 样本均值是总体均值的无偏估计.

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This is a conservative estimate of the population in the year 2000.

这是对公元二○○○年时人口的保守估计.

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