查询词典 sampled

This paper systematically researched this sort of nonuniformly sampled signals'digital spectrum structure, signal-to-noise ratio , the response of D/A converter with nonuniformly sampled signals, the algorithm for estimating timing offsets, the relationship between the discrete time expression of the total energy and the continuous time expression, the estimation of the average power, the algorithm of recovery and application in designing and analyzing the digital waveform synthesizer.

本文全面系统地研究了这类周期性非均匀采样信号的数字谱结构，信噪比表达式，数模转换器对非均匀采样信号输入的响应，误差校正算法，时域与频域的能量对应关系，对功率测量的影响，内插恢复算法，以及在设计和分析数字波形合成器中的应用。

Compare the data structures of pressure fluctuation signals and AE signals both sampled in gas-solid fluidized bed, and the difference of data structures among AE signals sampled in gas-solid fluidized bed, pneumatic transport tube, slurry bubble column, liquid-solid loop reactor, and liquid-solid stirred tank. Based on the compare, the corresponding relation between signal structure and physical multi-scales was established.

通过对气固流化床的声发射信号与压力脉动信号的结构比较，以及气固流化床、气力输送、气液固淤浆鼓泡床、液固环管及液固搅拌釜中声发射信号多尺度结构差异比较，建立了多相流体系随机信号多尺度结构与物理多尺度的对应关系，认为在有固体颗粒存在的多相流体系，微尺度信号代表了颗粒相对于主体流动的运动状态；介尺度代表主体流相对于系统的运动或者不同主体流之间的相互运动；宏尺度则反映整个系统状态随时间的变化。3。

Systematic studies were performed on the algorithms of rescaled range analysis on theeven-sampled time series.A new approach based upon the random sub-series was presented.Wefound that the fluctuations of the R/S curve corresponding to the non-trivial algorithm stemsfrom the screening effect.A generalization of the R/S analysis from uniformly-spaced time seriesto uneven-sampled series was proposed.

系统研究几种域重标分析算法在分析等间隔时间序列时的优劣，提出了一种基于随机子序列的新算法，并用屏蔽效应来解释平庸的R/S曲线波动的原因，提出了非等间隔的时间序列的R/S分析方法。

Methods Two hundred and ninety seven middle-aged and aged females were sampled randomly from the cases who were examined in the bone mineral density measurement department of The Second Affiliated Hospital of Nanchang University from January 2004 to January 2006, and their age, stature and body weight were recorded exactly. The BMD of lumbar (L2~4), femoral neck, Ward's and great trochanter was measured by dual energy X-ray absorptiometer, then statistically analyzed.

从2004年1月～2006年1月在南昌大学第二附属医院骨密度测定室检测的就诊者中随机抽取297例中老年妇女，准确记录其年龄、身高、体重；采用法国DMS公司Challenge：双能X线骨密度测定仪检测腰椎(L2~4)、股骨颈、ward's三角以及大转子的BMD，然后进行比较和统计分析。

Blood was sampled twice in each patient at admission and at seventh day.

每例患者于入选后及第7天各抽血一次留取标本。

This study investigated not only the release of Cu,Zn at different pH values and at different grain-sizes from contaminated sediments by Cu,Zn sampled from alongshore water bodies north of Bohai Bay,but also the releasing kinetics of Cu,Zn under special acidic conditions.

以渤海湾北部海域沉积物为研究对象，分别经重金属Cu、Zn污染后，研究了在不同pH和不同粒度条件下Cu、Zn的释放能力，同时研究了在特定酸性条件下Cu、Zn的释放动力学。

While holding the Alt/Option key, I clicked and sampled.

同时举行的竞标/选择键，我clicked和采样。

Meanwhile, the part of software has realized the function of the alternating electricity parameter analysis, the directing electricity parameter analysis and the demonstration, which is taking the sampled data in a sampling cycle as the examination object, and carrying on the analysis with the digital signal processing technology to the sampling data, and then programming with single chip.

软件部分则是以一周期内采集的数据为检测对象，用数字信号处理技术对采样的数据进行分析，用单片机进行编程，实现交流电参量和直流电参量分析及显示功能。

In order to develop the animal into a new laboratory model, we sampled two species of amphioxus （ Branchiostoma belcheri and B.

要实现文昌鱼的模式动物化，实验室内全人工条件下繁殖是关键的第一步。

The Swithched-Current circuit is a new technique for analog sampled data processing.

开关电流技术是一种新的模拟抽样数据处理技术。

A very small gap between coils and magnets is important, especially if the coils do not have a ferrous core.

一个非常小的差距线圈和磁铁是重要的，尤其是当线圈没有有色金属核心。

Keep your travel budget low - make your comfortable vacation or business stay in Palm Springs cheap.

令您旅途省钱，在柏林度过舒适的假期或商务旅行。