估算

Results showed that obvious difference existed between kinds and concentrations of pollutants studied in triolein and those in XAD resin extracts, for their difference of sampling ways.

SPMD技术对水中有毒有机污染物浓度估算值与XAD测定值之间差别较大，推测主要来自被动式采样和主动式采样的差异。

Not only does conventional estimation of population take long time, drain of man-power and money, but also it is unaccurate because it depends on statistic data of few years.

常规人口估算方法耗时、费力、财物消耗大且周期长，况且，仅靠少数年份的人口统计资料也是难以准确揭示人口状况的。

Not only does conventional estimation of population take long time, drain of man-power and money, but also it is unaccurate because it depends on statistic data of few years.

中文摘要：常规人口估算方法耗时、费力、财物消耗大且周期长，况且，仅靠少数年份的人口统计资料也是难以准确揭示人口状况的。

The new statistical analysis methods are mostly based on mixed linear model approaches for estimating variances and covariances, unbiasedly predicting random effects, analyzing conditional variaces and effets, and composite interval mapping.

基于混合线性模型的分析原理的统计分析方法包括方差和协方差估算方法、随机效应的无偏预测方法、条件遗传方差和条件遗传效应的分析方法、复合区间作图方法等。

Based on the scope of aboveground biomass of two main types of steppe vegetation undegraded and degraded, we assessed steppe vegetation degradation rank with the unit of pixel, and compiled steppe degradation distribution map of the middle reach of Xilin River Basin.

以内蒙古锡林河流域中游为研究区，应用Landsat TM资料，结合地面生物量定位测定，建立草原地上生物量估产模型，应用Visual C++编程，估算了2000年7月中下旬锡林河流域中部草原地上生物量。

Therefore, the development trends are: to establish the dynamic NSP pollutant transport and transformation model which can be applied easily to ordinary natural watershed; to study the estimation methods of NSP load and model parameterized in terms of geomorphic parameters (Horton's numbers) for ungauged watershed.

因此，发展趋势为：第一，建立以污染物迁移转化机理为基础的、适合于野外流域和便于推广应用的非点源污染负荷模型；第二，研究无资料地区的非点源污染负荷估算方法与模型参数估计途径。

I figure that each carton of milk has a total of about five minutes that it can safely spend unrefrigerated.

照我的估算，每一盒牛奶能放在冰箱外而无变质之虞的时间，大概只有五分钟。

The amount of web material added to, subtracted from and present in the tension zone in a sample time period is then converted to an unstrained amount of web material that when combined provides an estimate for the present amount of unstrained web material present in the tension zone.

然后，将采样时间周期内添加到张力区的、从张力区中减去的以及存在于张力区中的卷筒纸材料的量转换为卷筒纸材料的非应变量，当将他们相结合时，给出存在于张力区内的非应变卷筒纸材料的当前量的估算。

The precision of the traditional ultrasonic localization method is limited due to unsufficiently precise estimation of the sound velocity and the time of flight, therefore, a new method, the special fusion method for redundancy ultrasonic information was proposed to solve the precision problem.

针对常规的超声波定位方法存在对决定定位精度的声速与渡越时间估算不准，导致定位精度有限的问题，提出了一种新的超声波绝对定位方法，即冗余超声波信息特殊融合法。

The wedging model testing shows that the thickness estimated by this method is quite effective and intuitive. What is more, it will not be affected by wavelet phase and so has a good adaptability.

楔状模型试验结果表明，通过二阶功率谱进行薄层厚度估算更加直观有效，且不受子波相位的影响，适应能力更强。

It was Napoleon, the immense somnambulist of this dream which had crumbled, essaying once more to advance.

那人便是拿破仑，梦游中的巨人，他还想往前走，去追寻那崩塌了的幻境。

This method alleviates the highly dependent on domain knowledge experts. The quality and efficiency of the KBS were improved.

使用这种设计方法减小了对领域知识专家的严重依赖，提高了知识系统开发的质量和效率。