查询词典 sampling fraction

Coil, Fe, Ni and Zn in spatial variation are identified and the correct assignations are 90.65% for three cluster sites; and (4) based on spatial variations in water quality, it is possible to optimize the monitoring strategy in future with only one of 3 sampling sites and seven discriminant parameters, which can decrease the number of sampling stations and corresponding costs.

coil， Fe， Ni和Zn）可以反映整体水质的空间差异性，且具有90.65%的正确判别能力；④归纳起来，从3类采样点中选择一个或多个、监测7个显著性污染指标即可全面反映后海湾水质管制区的水质空间特征，实现水质监测网络优化。

Hard coal and coke - Mechanical sampling - Part 7: Methods for determining the precision of sampling, sample preparation and testing

硬煤和焦炭机械化采样第7部分：采样精度测定方法，样品制备方法及试验方法

The card adapts its sample frequency to grid frequency variation and realizes equal-phase-trigger sampling in every period to enhance the sampling precision.

采集卡数据传输总线采用Compact PCI总线，使系统具备了可热插拔、易于扩展和通用性强等特点。

The equivalent-time sampling speed of a scope is not a measure of the speed of its ADC, but an estimate of the speed of an imaginary ADC that could capture a single-shot waveform at the same timebase, and with the same number of samples, as the sampling scope in question.

示波器的等效时间采样速度并不是量测ADC的速度，但是可以假想为在相同时基，相同样点数能够捕获单次波形的虚构的ADC，做为讨论中的采样示波器。

Ground parts: an overhead-type indicator by sampling ground capacitance transient current in the first half-wave and ground transient voltage in the first half-wave, to compare their phase, when the sampling ground capacitance transient current mutation and more than a certain value, and the instantaneous voltage and grounding The first-phase half-wave, while wire-to-ground voltage is reduced, then the judge circuit grounding occurred.

接地部分：架空型指示器通过采样接地瞬间的电容电流首半波与接地瞬间的电压首半波，比较其相位，当采样接地瞬间的电容电流突变且大于一定数值，并且与接地瞬间的电压首半波同相，同时导线对地电压降低，则判断线路发生接地。

In chapter 8, we discuss admissibility of strict Pi ps sampling scheme in a class of unequal probability without replacement sampling scheme presented by R.R.

第四章在前两章的基础上，讨论了整群抽样和分层抽样均含有辅助信息是时，补充辅助样本抽样方案的精度。

It is show that the suitable conditions are as following:the reaction temperature is 80～8℃; the heating time is ～0 min; the mass fraction of the abluent is 7%～0

果表明，在适宜的温度(80~8℃)、适当的加热时间(~0 min)、清洗剂质量分数为7%~0%和剂砂体积比为∶的条件下，YSFL-油砂清洗剂可以将油砂矿中油与砂较好的分离。

A fraction can also be applied to an absolute or simple majority.

该部分也可以适用於绝对或简单多数。

With the establishmentof the equivalent medium model, RTM-DRE was applied to study radiative transfer intransparent medium with scattering particles. By taking into account of absorption andscatter of particles, absorption of binder and reflection of interface, the apparent spectrumabsorption model of thermal control coatings was developed by RTM-DRE combined withMies theory. Validity, computational error and time of the model were validated andanalyzed. Furthermore, the apparent spectrum absorption characteristics of thermal controlcoatings were studied, and the influences of optical characteristics of binder and particles,volume fraction of particles, particles diameter, characteristics of interface, and incidentangle of irradiance were analyzed.

采用RTM-DRE研究热控涂层内辐射传递，结合Mie氏散射理论，考虑粒子吸收与散射、基料吸收、界面反射等因素影响，建立热控涂层表观光谱吸收率计算模型，验证计算模型的正确性，分析计算模型的计算误差与计算时间；在此基础上，通过计算热控涂层表观光谱吸收率来研究热控涂层表观光谱吸收特性，分析基料与粒子光学特性、粒子体积份额、粒径、界面反射特性、辐射能量入射角等因素的影响，初步研究空间环境因素对热控涂层表观光谱吸收特性的影响，采用系统灵敏度理论定量分析热控涂层表观光谱吸收特性变化对卫星温度的影响。

This fraction is called the acceptable quality level.

这个比例被称为可接受质量水平。

"The operators will suffer a temporary decrease in the number of consumers and short message services as people may not like having to provide their ID cards for a phone number," Xu Junqi, vice-dean with the Policy-Making Institute of the Telecommunications Research Centre under MII, said yesterday.

信息产业部下属的通信决策研究院副主任徐俊其昨天说：&实行手机实名制后，人们可能不太情愿用身份证注册手机号，所以通信运营商会暂时面临用户减少和短信用户减少的问题。&

I don't believe in make-believe!

我不相信这些虚构的故事。