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.

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

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

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。

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

The Interval Estimate of the Difference of Two Population Mean Value

两个母体均值之差的区间估计

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。

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。

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。

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。

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。

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。

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

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

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。

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。

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.

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.

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.

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.