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Firstly, the isotropic difference templates were introduced to approximate the differential in the ADI-FDTD method, and the weighting coefficients of difference terms were determined for implementing isotropic numerical dispersion; Then the permittivity and permeability were adjusted manually to reduce the numerical dispersion error in any directions. Therefore the simulation accuracy and efficiency can be improved effectively for time domain problems with some finite bandwidths.

该方法在ADI-FDTD方法的差分近似微分中引入各向同性差分模板,并通过确定各向同性差分的加权系数来近似实现各向同性,然后人为修正空间的介质参数来减少各个方向上的数值色散误差,因此在模拟一定带宽的时域问题时可有效提高计算精度和计算效率。

This text appurtenance flows the character of the cost to talk, the approval steers the analyse to the regulate present condition of the current business logistics cost, aiming at the logistics cost for control amid the existent subject, synthesize the supervision angle and each link of direction of logistics from the business, propose to strengthen the logistics cost for control, the reduction circulates the valid counterplan of the charge, to strengthen the competitive edge.

本文从物流成本的特征谈起,通过对现行企业物流成本的控制现状进行分析,针对物流成本控制中存在的问题,从企业综合管理角度和物流方向各环节,提出加强物流成本控制,减少流通费用的有效对策,以增强竞争优势。

It is efficient because it is only after the client has settled on the creative direction that we go to the art director.

这很有效,因为只有在创意的方向上客户做出了决定之后,我们才会去找艺术指导。

The study has focused on: 1 The research background and the current state of the power measurement were analyzed systematically, and then wavelet-based power measurement algorithm was certified feasible for astable signals; 2 We developed a new method of RMS and power measurement based on Dmeyer wavelet. After that three other wavelet measurement approaches were compared with Dmeyer wavelet-based measurement approach. Then the impact on measurement errors of amplitude frequency property and energy leakage of wavelet filter banks were deeply researched, and some measures were proposed to reduce it; 3 We developed a new strategy of power measurement algorithm based on lifting wavelet, which had calculation advantage compared with the first wavelet, so that it was more suitable for the realization of hardware; 4 The running system of wavelet-based power measurement algorithm based on DSP was proposed, and then it was realized on ICETEK-VC5416-A EVM board; 5 Existing problems and the further research direction of wavelet-based power sub-band measurement algorithm was discussed.

本文对基于小波变换的功率测量算法展开深入的分析研究,主要内容有:1)系统地分析了功率分解测量的研究背景、国内外的研究现状,并从能量守恒的角度验证了小波功率分频带测量算法在非平稳信号条件下的可行性;2)首次提出了Dmeyer小波变换有效值与功率的测量方法,进而通过对该方法与3种已经提出的小波测量方法的对比分析,深入研究了小波滤波器组的幅频特性和能量泄漏特性对测量误差的影响,并针对电网谐波的特点提出了减小影响的相关措施;3)首次提出了二代小波功率测量算法,对比一代小波功率分频带测量算法,它大大减少了算法实现的运算量及内存的需求量,从而更适合于硬件的实时实现;4)提出了小波功率分频带测量算法的DSP实现方案,并在ICETEK-VC5416-A EVM板上进行了实现;5)探讨了小波功率分频带测量算法目前仍存在的问题,并提出了进一步的研究方向。

It"s the new direction of technique development for data mining to apply availably in the banking, and it"s also the urgent demand of banks competition.

将数据挖掘技术有效的应用于银行业是技术发展的方向,也是银行业自身竞争发展的迫切需要。

The logic behind this move, which effectively means booksellers cannot return unsold backlist books, is that backlist titles have established sales patterns, making future demand easier to predict. In 2000, 13 percent of all books distributed in Australia were returned, representing an industry-wide cost of approximately $101 million.

此举意味着,图书销售商虽然不能有效退还没有卖完的书籍,但由于库存书籍确认了销售方向,使未来的需求容易预测。2000年,澳大利亚图书总量的13%被退回,产业总费用将近101万美元。

The logic behind this move, which effectively means booksellers cannot return unsold backlist books, is that backlist titles have established sales patterns, making future demand easier to predict.

此举意味着,图书销售商虽然不能有效退还没有卖完的书籍,但由于库存书籍确认了销售方向,使未来的需求容易预测。2000年,澳大利亚图书总量的13%被退回,产业总费用将近101万美元。

A significant breakout of this triangle should be indicative of the next long-term trend.

同时也请注意图中RSI上的长期三角旗形,这个三角旗形的有效突破将会预示下一个长期趋势的方向。

The purpose of the invetion is to effectively stop the blowoff of an injected fuel into an exhaust port when the opening and closing of valves are overlapped with each other by properly setting the fuel injection direction of a fuel injection device mounted so as to face the intake passage of an internal combustion engine.

提供一种内燃机的进气结构,适当设定被安装成对着内燃机的进气通道的燃料喷射装置的燃料喷射方向,有效防止在气门开闭动作时间的重合期间朝向排气口的喷射燃料的喷泄。

According to the principle of A-O interaction and quartz′s different characteristic in the direction of parallel and perpendicular acoustics field, with a quarter-wave plate being inserted in an AO Q-switch Nd∶YAG laser cavity between mirror and Q-switch, AO Q-switch′s Bragg diffraction efficiency formula is put out theoretically. Consequently, the conclusion has been drawn by calculating simulation that the ability of a single AO Q-switch′s switching CW Nd∶YAG laser is increased.

结合声光相互作用理论和声光介质熔石英在平行和垂直于声场的两个方向具有不同声光优值的特性,理论推导了腔内引入四分之一波片后声光Q开关的布喇格衍射效率公式,计算模拟得出引入四分之一波片能够有效地提高声光Q开关关断连续Nd∶YAG激光的能力。

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推荐网络例句

He is the most remarkable man that I have ever known.

他是我知道的人中最值得注意的人。

Increased appearance of lymphocele was noticed in patients with diabetic nephropathy, congenital malformations of the urinary tract, and inflammatory diseases, including glomerulopathy and extraglomerular ones, after high-voltage radiotherapy and after removal of the renal graft.

经过高压放射疗法和切除移植肾后,在糖尿病肾病患者、泌尿系统先天性畸形患者和炎症患者身上发现淋巴囊肿有所增加,包括肾小球病和球外疾病等。

Pagans and partygoers greeted the summer solstice at the ancient stone circle of Stonehenge.

异教徒和社交聚会常客在史前巨石柱的古老的石圈附近庆祝夏至。