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Open Linear Encoder includes main grating scale and optical encoder head. This optical encoder head includes LED light source, optical detector module, and secondary phase-grating. LED light will pass through the plano-convex lens and produces parallel light. As the parallel light pass through secondary grating, the quadratic image display on the main grating scale. And the Moire interference will be reflected from the main grating scale and detected by optical detector module, as there is a relative shift between the main and secondary grating. From detecting the periodic sinusoidal signal with phase difference 90°, the period represents the grating pitch, using the counter to detect the number of periodic signals to get the displacement, and we can adapt the technology of electron subdivide further to increase the resolution of measurement .

反射式光学尺包括主光栅尺及光学读头，光学读头包含LED光源、光侦测器模组及相位式副光栅，LED光源经平凸透镜，产生平行光穿透副光栅后，副光栅之二次成像投射在反射主光栅尺上，当主、副光栅因相对运对产生之Moire干涉经主光栅尺反射至光电检测器，检出相位差90°之周期性弦波讯号，其周期代表栅距，因此可用计数器检出周期性讯号数目得到位移量，可进一步采用电子细分割技术提高解析度。

Our aim was to compare the difference between body plethysmography and helium dilution method detecting the FRC repeatedly.

现比较体描法与密闭式氦稀释法的重复呼吸法测定功能残气量之间的差异。

Theoretical analysis and simulations indicate that the algorithm has good performance of detecting moving point target which range of the target speeds was known.

文章最后对本文的研究工作和结论进行了简要的总结。

An instrument used by glassblowers as an aid in detecting the presence of glass strain is known as a polariscope.

一种工具用glassblowers作为辅助侦查在场的玻璃应变众所周知，作为偏光镜。

This thesis arms to develop a measurement system for detecting phase retardation, slow axis orientation, and optical path difference of a waveplate. The structure of the system includes three laser light source, a half circular polariscope, a rotating analyzer, an optical chopper and a lock-in amplifier.

中文摘要本论文用於量测双折射光学波板之相位延迟量、快慢轴方向、光程差与波板阶数，实验架构包含三种不同波长之雷射光源、半圆偏光仪系统、旋转分析板、光遮断器与锁相放大器所组成。

PopGen 32 software for clustering analysis and calculating.Fourteen of the 80 random primers were tested to possess the stronger detecting effect of polymorphous character.

用这14个随机引物对5个栽培居群的广藿香进行了的分析，对得出的结果应用PopGen32软件进行计算和聚类分析。

The paper presented a method of detecting long-range correlation in a signal--detrended fluctuation analysis and applied it to diagnose gear faults. Two key problems, i.e. scaling range and polynomial order of fitted trend, were discussed. Scaling exponent was extracted to be as a detector for diagnosing five types of gear faults, their were normal, spalling, tooth broken, wearing and cracking.

探讨了一种检测非平稳信号中长程相关信息的方法--利用去趋势波动分析（detrended fluctuation analysis，DFA）方法来诊断机械故障，着重研究DFA的尺度范围选择、趋势拟合阶数选择等关键问题，提取尺度指数作为诊断的特征参数，应用于齿轮的正常、剥落、断齿、磨损、裂纹等五种状态诊断，正确率达96％以上。

This was mainly because of the ability of detecting genetic variance of the two techniques.5. At the end of this paper, we compared the parameters that were used in population genetics.

本文对应用于群体遗传分析的各种参数进行了系统的比较，以RAPD分析结果为例分析了各参数的优缺点和使用限制等。

I've never had much luck with portable CD and DVD burning software, between crashing and not detecting drives, so I was really pleased to read about the portable version of CDBurnerXP.

我从来没有很多运气的便携式CD和DVD刻录软件，之间没有崩溃和检测驱动器，所以我很高兴地阅读有关的便携式版本

Based on the feature of performance detection of a seedmeter, an intelligent detecting method for seed position was proposed in this paper.

根据基于计算机视觉的排种器性能检测的特点，提出了基于神经网络的种子位置智能检测方法。

When this condition occurs, inbound replication with the source partner is stopped on the destination domain controller and event ID 2042 is logged in the Directory Services event log.

计算机密码学是研究计算机信息加密、解密及其变换的科学，是数学和计算机的交义学科，也是一门新兴的学科。

Instructions: click on the thumbnails to see a larger image, then use the left-right arrow keys to scroll through the slideshow.

使用说明：滑鼠点在小图上即可放大观赏。开启后键盘左右键可用来换照片。