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On the basis of wavelet transform and S transform,through popularizing basic wavelet, the basic wavelet containing 4 kinds of unknown parameters (amplitude, energy attenuation rate, energy-delay time and apparent frequency ) was constructed, realizing generalized S transform.

在小波变换和S变换基础上,通过对基本小波的推广,构建含有四类待定参数(振幅、能量衰减率、能量延迟时间及视频率)的基本小波,实现广义S变换。

Unicolor in autogamy shows different the seed-setting percentage in different pollinating methods, with the result as the higher rate of self-fruitfulness through xenogamy. Based on hybridization, genetransferring through pollen-tube pathway to Lilium davidii van Unicolor is researched. The master of basic technique of exogenous DNA transferring to Lilium davidii var.

在进行了有性杂交的基础上,选取具有较高结实率的兰州百合作为受体,利用花粉管通道导入法,对一些百合品种的总DNA在在兰州百合中进行了初步研究,基本掌握了在兰州百合中进行外源DNA导入的基本操作方法,提供了一组以结实率和有胚种子率为标准的优化参数。

In this paper, we study effect of current density on throwing power and elongation, then investigate throwing power of high aspect ratio through-hole under different plating parameter, and research the reliability of PTH.

本文研究了不同电流密度下高厚径比镀通性及镀层延展性的变化趋势,在设备和药水条件基本固定的情况下,考察不同电镀参数组合对高厚径比通孔电镀的效果,并对不同参数下的孔铜作热应力测试对比。

In the second part of the paper, the sport techniques of the flight elements was analysised in-depth theoretically by the movement technical structure:①the giant swing was first analysised in mechanics by applying the Kane's method, the dynamic equation of 5-link multi-body model was established, and the computer simulation software of the giant swing on the high bar was developed.

其次,作为单杠上飞行动作系统性研究的另一主要方面,本论文对飞行动作一般技术结构中的各技术环节进行了深入的理论分析:①着重对飞行动作准备阶段的回环运动技术进行了动力学分析,主要采用了多体力学理论中的Kane方法,建立了5环节人体回环运动的动力学方程,并应用计算机数值仿真技术研制开发了用于回环运动动力学分析的数值仿真软件,进而以动作实例对回环运动进行了数值仿真与误差分析,其所得到的数值仿真结果能够满足对人体回环运动的动力学分析和仿真要求;②对于飞行动作的撒手技术环节,本论文从人体环节相对运动角度,来分析撒手时人体质心的运动以及撒手时角动量参数,并列举了几种飞行动作撒手技术的基本力学指标;③关于飞行动作的空中技术,论文在总结了空翻转体动力学机理的研究成果基础上,对人体空中运动定量化问题进行了一般性描述,并进一步应用刚体动力学理论,着重建立起了描述空翻与转体技术之间定量化的关系,讨论了空翻转体运动的稳定性及其运动模式的转换问题,它对于定量地评定空翻转体技术以及今后对空翻转体动作进行数值仿真都具有理论上和实践上的重要意义;④关于飞行动作再握技术环节,本论文避免了以再握瞬时性的力学参数指标来描述再握技术特征的简单化途径,提出以再握下摆与回环下摆相对比的方法来研究再握技术,并以飞行动作再握技术的具体实例进行了对比分析,表明再握下摆技术相比回环下摆技术有着相当的困难性和复杂性,运动员对再握下摆过程中各环节的相对运动实施有效的控制,是连接高难动作以及顺利流畅地完成成套动作的关键。

The effect of slenderness ratio, diffuser, pressure ratio and cold mass fraction on separation performance was analyzed and the result tallied with the simulation, which proved that this paper can provide theoretical and experimental basis for industry.

分析了基本结构参数长径比、阻涡器与操作参数压比、冷流率对分离性能的影响,实验数据与数值模拟分析结果吻合较好,为两相涡流管的工业应用提供了理论与实验依据。

Based on basic theory of elastic wave propagation, wave equation forpropagation of elastic wave in 2 dimension vertical inhomogeneous mediumof similar concrete cutoff wall model is developed. 2 dimension elastic sheetof concrete cutoff wall is established to research law and energy distributionrelations between propagation, attenuation, reflection and transmission ofelastic wave in concrete cutoff wall; Based on the concept of resolution, thecontent of vertical reflection method used to inspect concrete cutoff wallresolution is raised and factors will have influences on resolution are analyzed,expression of defective layer composite reflection factor and detectabledefective layer maximum thickness are developed; Relations between allsteps of sampling system of vertical reflection are build, the influence ofcentrum characteristics and receiving sensor on testing results are analyzed,therefore parameter requirements for testing instrument and parameter selection principle of collected parameters are raised.

2从弹性波传播的基本理论研究出发,推导了弹性波在类似混凝土防渗墙模型的二维垂向不均匀介质中传播的波动方程式;建立了混凝土防渗墙二维弹性薄板模型,研究弹性波在混凝土防渗墙中的传播、衰减、反射、透射规律及能量分配关系;从分辨率的概念出发,提出了垂直反射法检测混凝土防渗墙分辨率的内涵,对影响分辨率的因素进行了分析,推导出了缺陷层复合反射系数、可检测缺陷层极限厚度的表达式;建立了垂直反射法采样系统各环节之间的关系,研究分析了震源特性、接收传感器对测试结果的影响,提出了对测试仪器参数的要求及采集参数的选择原则。

The correlation analysis and identification algorithm is used widely in engineering. The basic principle of the algorithm is discussed first. Then the Fibonacci sequence is introduced into the algorithm,and the variable step method based on the modified Fibonacci sequence is used to optimize the model parameters.

相关分析辨识算法在工程上是一种常用的参数辨识算法,文章在介绍该算法基本原理的基础上,将Fibonacci数列引入该算法,并在算法中采用基于修正的Fibonacci数列的变步长方法寻优模型参数。

Then the Fibonacci sequence is introduced into the algorithm,and the variable step method based on the modified Fibonacci sequence is used to optimize the model parameters.

相关分析辨识算法在工程上是一种常用的参数辨识算法,文章在介绍该算法基本原理的基础上,将Fibonacci数列引入该算法,并在算法中采用基于修正的Fibonacci数列的变步长方法寻优模型参数。

The expression of space-charge field is given out in the paper with two time constants τpa and τpb. When considering and not considering the photovoltaic effect, the diagrams of the two time constants as a function of irradiance in units of 1/ are the same.

理论研究表明,空间电荷场的形成和擦除与两个时间参数有关,在考虑或者不考虑光生伏打效应两种情况下,这两个参数随擦除光强的变化有基本相同的变化规律,光栅的写入和擦除有相同的结果。

Simulation annealing is a technique which can be applied to any minimisation or learning process based on successive update steps where the update step length is proportional to an arbitrarily set parameter which can play the role of a temperature.

即:模拟退火算法是一种能应用到求最小值问题或基本先前的更新的学习过程。在此过程中,每一步更新过程的长度都与相应的参数成正比,这些参数扮演着温度的角色。

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推荐网络例句

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊!不用提了。提到肉,真是糟透了。

Tristan, I have nowhere to send this letter and no reason to believe you wish to receive it.

Tristan ,我不知道把这信寄到哪里,也不知道你是否想收到它。