进行实验

Some improvement was also made to this experimental circuit and the error in the experimental data was analysed.

对该实验做了一些改进，并对实验数据的误差进行了分析。

Meanwhile, the theory of measuring phase difference was discussed in detail, and the results of experiment were given.Finally, the error of the experimental results was analyzed.

同时阐述了相位差的测量原理，并给出了该相位计的实验结果，最后对实验结果的误差进行了分析。

Furthermore, it also presents some elementary experimental results that the surface error is up to nm level.

最后结合具体实验进行了分析和讨论，实验所测得的面形误差为nm量级。

The expression of angle error is more concise. The accumulation of calculation error is reduced. The virtual prototype technology is used to validate the degree of influence.

并利用基于ADAMS的虚拟样机技术对曲柄摇杆机构中B铰链存在的4种单因素误差产生的影响度进行了实验验证，由实验结果分析验证了理论分析的正确性。

The experimental methods and data processing for measuring fric- tion factor by means of upsetting ring have been summarized and com- pared in this paper.

本文对圆环镦粗法测定摩擦系数的实验方法和处理实验数据的各种方法进行了总结比较。

Factorial experiment: refers to the results from the known to seek the reasons for its designed to produce results and carry out experiments.

析因实验：是指为了由已知的结果去寻求其产生结果的原因而设计和进行的实验。

The effects of extraction time, solvent volume, ethanol concentration and temperature on the yield and PC enrichment have been described. A full factorial experiment method and a second-order orthogonal design were used in the study.

以乙醇为溶剂，以PC含量为54.48％的大豆磷脂为原料，进行二次萃取，实际操作为降温提取，实验结果证明了此方法的可行性；在所设计的实验中，提取物中PC含量从原料中的54.48％提高到了76.68％。

This paper focuses on the function mining by Gene Expression Programming, proposing an approach to factorize polynomial functions, GPF.

本文对利用基因表达式编程技术进行函数关系的挖掘进行了较深入的研究，利用该方法进行多项式函数关系的分解，并在此研究的基础上实现了基于多基因染色体的并列函数表达式挖掘，实验证明取得了很好的效果。

It is the first important step in video analysis and will directly affects the effectiveness of indexing Shot boundary detection is one of our major research interests and we will tackle the following existing problems the ambiguity between gradual change and camera motion, the discontinuity during gradual change, false detection caused by illumination variation and flashlight, automatic threshold selection Firstly, we discuss shot boundary detection in non-compressed domain In chapter 2, we compare some of the commonly used detection methods which are based on frame difference and point out that single feature will not generate good results As a conclusion, we use fuzzy logic to combine multiple features Presently, most frame difference based shot boundary detection algorithms rely on threshold and hence the selection of such thresholds will greatly affect the performance of boundary detection We propose a membership function to define frame difference and calculate the membership with self adaptation according to the statistic distribution of frame differences to satisfy different type of video clips Experiments show that the proposed fuzzy shot boundary detection algorithm can be used with different video types and has a high detection precision and recall In chapter 3, we discuss model-based shot boundary detection algorithms regarding chromatic and spatial editing effects such as fade-in, fade-out, dissolve and wipe Various parameters are proposed to better describe the characteristics of each editing type.

镜头边界的检测是把视频自动地分割为一个个镜头，作为基本的索引单元，因此它是视频分析重要的第一步，直接影响到视频检索的成败。镜头边界的检测是本文研究的重点之一。目前镜头边界检测算法主要存在以下问题：渐变与镜头运动难以区别；渐变过程中的不连续与停顿、光照条件的变化及闪光灯等特殊情况会引起误检测；自动选择阈值比较困难等。本文首先针对非压缩域视频进行了镜头边界检测的研究。在第二章中我们采用了比较流行的基于帧间差的方法。在比较各种帧间差计算方法的基础上，指出使用单一的特征难以取得很好的检测效果，提出用模糊逻辑综合使用各种特征。目前大多数基于帧间差的镜头边界检测算法都采用阈值法进行镜头转换的判别。阈值选择的误差对检测性能有较大的影响，本文提出用隶属度函数定义帧间差较大、中等较大和较小等概念，并根据帧间差的统计分布自适应地确定隶属度，以适应不同类型的视频片断。实验结果表明这种基于糊逻辑的镜头边界检测算法可以适应不同的视频，并具有较高的检测精度和检出率。在第三章中采用基于模型的方法进行镜头渐变的检测，研究了淡入／淡出、慢转换和扫换的模型。

By Faradic impedance technique,a significant increase of the interracial electronic transfer resist- ance R_ was determined when the SH-ssDNA probe/Au electrode hybridized with its comple- mentary sequence.

实验中对DNA探针的自组装时间、杂交温度、杂交时间和阻抗测量液等实验条件进行了观察和优化；通过选择自组装液中SH-ssDNA探针和RSH的浓度，减少DNA在金电极表面的非特异性吸附，同时保证金电极表面自组装的SH-ssDNA探针有合适的疏密度，提高了杂交效率。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。