查询词典 sampling fraction

Because of this, it has become the most popular method for counting forest birds. In this paper, the assumptions, types, and limiting factors of using point count method in bird survey ere introduced, with the focus on the appropriate selection of sample size, sampling points and sampling time, and the durations of efforts.

本文在介绍样点法的假设条件、类型和影响鸟类调查准确性因素的基础上，重点介绍了样点法在调查森林鸟类需要考虑的样本大小、样点布设、调查时间、每点的停留时间和调查周期等。

The hardware design of it mainly includes circuit of radio reception、signal sampling circuit、the CPU control unit ,man-machine conversation and communication interface;The software design contains data sampling module ,analysis and processing module,keyboard and display program module and so on.

监测记录仪的硬件设计主要包括收音电路、采集电路、CPU控制单元、人机接口单元和通信接口；软件的设计包含数据采集、分析处理、远程通信和键盘显示等程序模块。

The results show that the man-powered sampling device can produce much better response than the battery-driven sampler and that, to get satisfactory anomalies, we should totally collect more than 9 liters of pumping gases at each sampling site.

在已知隐伏矿区，利用合适的液态捕集剂进行了动态累积测量不同采样装置及抽气量效果对比试验，结果表明，手提式采样器装置系统效果明显优于大气采样器装置系统，每点采样量在9L以上效果较好。

Detect equipment series: metallographic analysis (USA Jenco optical microscope, image analysis system for measurement, metallographic analysis software), biopsy sampling manual / semi-automatic / automatic gong style Microsection sampling machine .

检测仪器设备系列：金相分析(美国Jenco金相显微镜、影像量测分析系统、金相分析软件)、切片取样（手动/半自动/全自动锣式金相切片取样机。

According to the analysis of real pitch errors within the mechanical angle of 0°~360°, the reason that caused the bouncing pitch errors between odd sampling and even sampling is the noneffective voltage of inductosyn angular measuring system.

根据实际测量得到测角系统在0°~360°之间全部零位误差数据，分析测角系统产生奇、偶点跳跃零位误差的原因来自于感应同步器测角系统引入的非有效电势。

A tabulating technique of normal distribution sampling and a correlation sampling technique are utilized to simulate bus load uncertainty and correlation.

一个正态分布取样列成表的技术方法和相关抽样技术被利用来模拟母线负荷的不确定性和相关性。

In order to determine the convergence of the line sampling -based reliability sensitivity method,the variance and the variation coefficient were derived for the reliability sensitivity estimation based on the line sampling .

为判别线抽样可靠性灵敏度分析的收敛性，推导了线抽样可靠性灵敏度估计量的方差和变异系数的计算公式，近似计算了线抽样可靠性灵敏度在给定置信度下的置信区间。

Total inorganic phosphates and orthophosphate were determined with satisfactory sensitivity for real sample analysis, and with sampling rates of 40 and 80 per hour, respectively. The obtained sampling rates were much higher than the existing automatic methods (20 per hour).

总无机磷酸盐和正磷酸盐进样频率分别为40和80样次/小时，远远高于现有的自动分析方法（20样次/小时），方法的灵敏度能够满足实际样品分析的要求。

Theoretically shown, the fractionally spaced equalization has a sampling rate higher than the Nyquist rate so as to be insensitive to sampling phase, overleap a matched filter, which is superior to the symbol rate equalization.

从理论上指出小数抽头均衡器所用采样速率不低于Nyquist速率，因而具有对定时时刻不敏感、省缺匹配滤波器等优点，与整数抽头均衡器相比具有优越的性能。

Methods Convenience sampling and snowball sampling techniques were applied to recruit MSM participants in comnmnity, and every subject was investigated by pelion in-depth interview.

方法在社区通过"滚雪球"抽样和方便样本招募男男性接触者，对其进行个人深入访谈。

For the head-teacher of the class said that I had seriously broken the school rules,which led me to a three-day suspend class.

为什么呢？因为我的班主任说我严重的违反了校规，于是让我停课三天。

Many of them believe that the conversion of thousands of working-class folk in England spared that nation from the mass carnage and the tyranny that came with the revolution in France.

他们之中有许多人相信，在英国数以千计的劳工阶级之悔改信主使英国免於遭受如法国大革命所造成的大屠杀和专制暴政。