查询词典 sampling method

Methods 18 583 subjects were randomly selected from three cities and three counties by multistage sampling method.

采用多级抽样方法，对辽宁省3市3县18 583名居民过去1 a中的伤害情况进行调查。

This paper introduces an apparatus blowing adsorption and an experiment method for sampling and analyzing the volatile odorant of plant.

提出一种收集、分析植物挥发气味物质的吹气吸附装置和实验方法。

The sampling method is operationally used in the crop monitoring system for the Ministry of Agriculture.

设计了满足生产应用的全国作物面积遥感监测抽样运行方法。

Adopting peak detection, AGC based on receiving duty cycle and multi-phase synchronization, the method can be an optional scheme for lowering sampling rate and system realization cost.engineering methods of IR-UWB wireless systems which focus on the RF front-end of the transceiver are studied by theoretical analysis and experimental verification.

文中还给出了综合这些方法时在室内多径信号下接收性能的仿真结果，仿真表明这种方法在室内环境下可以可靠工作在数兆到数十兆的传输速率上。

In order to determine the convergence of the line samplingbased 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。

Methods The osmolality of sodium hyaluronate gels with sodium hyaluronate concentration of 0.5%, 1.0% and 2.3% respectively were determined by VAPRO 5520 pressure osmometry. The sampling system with pipette or weighing method was compared.

用VAPRO 5520渗透压仪分别测定0.5%，1.0%和2.3%透明质酸钠凝胶渗透压；比较0.5%透明质酸钠凝胶称量加样与取样器加样的测定结果。

Mainfactors are as follows: standard solution、 regressive curve、 parallel experiment of sample、 diacetyl monxime's reagent colorimetic method、 spectrophotometer、 sampling , etc .

影响测定结果的分量主要有：标准溶液、回归曲线、样品平行试验、二乙酰一肟分光光度法、分光光度计、取样等。

An indicator sampling method is proposed for visualizing a three dimensional penetrable obstacle from a knowledge of far field data for time harmonic acoustic scattered waves.

提出了用时谐声散射场的远场信息来可视化三维可穿透目标的一种指示器样本方法，它是通过析取一个指示器函数在包含可穿透目标的某个样本区域中的支集来实现这种可视化的，其中，这个指示器函数在可穿透目标的内部和外部有显著不同的取值。

Methods: A recently deeloped method of sampling perilymph from the cochlear apex of guinea pigs was used in which the samples represent fluid originating from different regions along the scala tympani.

一种最近发展的从豚鼠耳蜗顶部进行外淋巴液采样的方法被应用于该项研究，采取这种方法可以获得代表沿着鼓阶不同区域产生的液体的样本。

By using this method,9 switching states were ensured during a sampling period of the matrix converter,and the duration of each switching st...

实验结果表明，采用提出的空间矢量脉宽调制优化调节策略，不仅消除了输出电压中的错误脉冲，而且降低了输出电压的总谐波畸变率，在输出频率为15Hz时，THD降低约15%，有效地提高了矩阵式变换器的输出波形质量，保证了系统的安全可靠运行。

Many will continue to choose to live in duality and in conflict.

许多人将继续选择活在二元对立性和冲突中。

I find that students of the University of Physical Education all wear sportswear at first sight.

我发现：体育大学的学生乍一看，都是穿运动衣，大家都一样