查询词典 sampling fraction

This invention relates to one MIMO-OFDM system simultaneous method, which comprises the following steps: a, processing relative computation by received local sequence and local ones to get relative peak and its side; b, processing filter on peak value and sides through one degree impact without limit; c, in the non integral digital sampling, the said peak value and its side are ordered to keep their position as time lag information; d, in the integral code sampling, it orders the peak value and its side and removes the sides and keeps relative peak position as time lag position to realize the simultaneous process.

本发明公开了一种MIMO-OFDM系统的同步方法，所述方法包括步骤：(1)将本地序列与接收到的序列进行相关运算，得到相关峰值及其旁瓣；(2)将所述相关峰值及其旁瓣通过一阶无限冲击响应数字滤波器进行滤波；(3)当所述MIMO-OFDM系统处于非整数倍码片抽样时，对所述相关峰值及其旁瓣进行排序，保留相关峰值及其旁瓣相应位置作为时延位置信息；(4)当所述MIMO-OFDM系统处于整数倍码片抽样时，对所述相关峰值及其旁瓣进行排序，并去除相关峰值旁瓣，保留相关峰值位置作为时延位置信息，从而实现同步。

Further more, this thesis has provided a new method for optimizing sampling in theory, and established the probability model for the positive definitiveness of discrete sample by which the number of sampling was optimized.

在应用上，建立了离散型样本协方差矩阵正定的概率模型；提出了一种新的优化抽样调查设计方案，优化了抽样个数。

A new high flow rate,multichannel parallel plate denuder sampling system has been developed which is capable of determining the particle size distributions and the semi-volatile organic compounds which can be lost from particles during sampling.

已研制出一种新的高流速率，多通道平行盘溶蚀器取样系统，它能确定微粒大小的分布，以及在取样期间从微位失去的具有半挥发性的有机混合物。

Firstly, the outage model of components is decided; then based on the load variation curves of load nodes the sampling, calculation and analysis of various system states are performed by enumerative sampling method.

首先确定元件的停运模型，然后以各负荷点的负荷变化曲线为基础采用枚举抽样法对各系统状态进行抽样计算与分析。

In hardware design segment, the features of CY7C68013 are described firstly, and then the schemes of communication module, sampling control module, analog signal sampling module and digital I/O extension module are described in detail. The key points of the design which should be paid attention to are also explained.

在硬件设计部分，首先介绍了CY7C68013芯片的性能和特点，然后给出了控制器与主机通信模块、采样控制模块、模拟信号采样模块和I／O扩展模块等的具体硬件设计方案，并重点介绍了设计中应该注意的问题。

In section 7, we discuss the sampling problem in space V〓, a simple and applicable sampling condition is obtained. In chapter three, we consider how to reconstruct f in space V〓.

在第六节，我们考虑采样值是以加权平均采样值的形式给出时的采样情况，得到了与第五节类似的采样条件。

Furthermore, the process of proportion resistance in the feedback circuit is changed, and the change of sampling voltage with sampling resistance is compensated with resistor. The impact of environment temperature on loading capacity and peak current is reduced.

此外，对反馈环中的比例电阻采用不同的工艺制作，通过电阻的温度系数补偿由采样电阻随温度变化所造成的采样电压的变化，减小温度对电路的带负载能力和峰值电流的影响。

The examples show how to have a accordant test in interal control system by means of fixed sample size sampling and the testing of estimation of difference in variable sampling was explained by examples.

现代审计的主要标志之一是审计方法的改进，在评价内部控制系统为基础的审计中采用了统计抽样的方法，提高了审计效率，保证了

Basesd on the precipitation difference in Tsaidam Basin of Qinghai Province, three sampling areas, including Geremu, Delinghan and Doulan, were selected, and then three sapmling plots in each sampling area were selected to study the characteristics of plant community which dominated by Ceratoides lateens, Nitraria tangutorum, Tamarix chinensis, Kalidium gracile, Haloxylon ammodendron and Salsola arbuscula respectively. At the same time, the morphological and physiological features of above-mentioned 6 species were measured for probing their drought tolerance. By using the subordinative function method, grey correlative degree analyse and no-weight index comprehensive evaluation method, their drought tolerance were compared as well. The results were showed as follows: The main xeric vegetation types in the desert steppe of Tsaidam Basin were Nitraria tangutorum community, Tamarix chinensis community, Haloxylon ammodendron community, Kalidium gracile+Salsola arbuscula community, Ceratoides lateens+ Haloxylon ammodendron+Kalidium gracile community.

根据青海省柴达木盆地不同地区历年降水量差异，在研究区内选择格尔木、德令哈、都兰3个采样区，每个样区内确定3个采样点(表示为D11、D12、D13、D21、D22、D23、D31、D32、D33)，以样区内唐古特白刺、甘蒙柽柳、梭梭、木本猪毛菜、里海盐爪爪、驼绒藜等6种主要植物为研究对象，通过调查采样地区群落特征，观测植物形态解剖特征，测定植物脯氨酸、可溶性糖、叶绿素、超氧化物歧化酶、过氧化物酶和过氧化氢酶等生理指标，研究了柴达木盆地6种植物抗旱生理特性及抗旱特性，用模糊数学隶属函数法、灰色关联分析和非加权指数评价法分别对6种植物的各个抗旱性指标进行了综合评价。

The optimal density of sampling points can be determined by the sampling grid cell size and the field area.

合理的采样密度可以根据允许的采样误差及要求的属性地图输出栅格单元尺寸而定。

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。