查询词典 comparison method

By comparison with experimental results and the available data, the soundness of the method in this dissertation has been proved.

通过实验结果及数据比较验证了本文分析方法的正确性和可靠性。

This method is proved to be effective by a simulation example and comparison with recent de-noise using wavelet theory.

通过仿真研究和与目前小波去噪方法进行对比，证明了该方法去噪的有效性。

Analysis shows that our method exhibits better performance by comparison with that of Ziv and Bruck.

分析表明改进后的方法与Ziv和Bruck的方法相比表现出更好的性能。

By comparison with the results obtained by the other calculating methods, it is proved that the satisfactory results can be obtained by the proposed method.

通过与常见公式计算的结果进行比较，所建立的方法得到了比较满意的结果。

By comparison,it is a reasonable and sysytematic method.

相比而言，它是一种比较合理、系统的方法。

This paper analyzed the air-conditioning system of one specific office building in Beijing, calculating the costs of unit cold and heat exergy and the unit cold and heat capacity of adopting GSHP system and air source heat pump system separately. With these numbers as standard for evaluation and comparison, it supports the conclusion that adopting GSHP system is better than adopting air source heat pump system and the heat economics analyzing method is more accurate than that based on energy.

以北京某一办公楼建筑空调系统为背景，选用地源热泵系统和风冷热泵系统两种方案，具体计算出二者的单位冷火用成本和单位冷热量成本，并以此作为评价指标，经分析比较，得出地源热泵系统方案要优于风冷热泵系统方案；以火用为基础的热经济学分析法要比以能为基础的分析法更全面准确。

Through the test and comparison of case history, the new method is confirmed to be reasonable in theory and practical in practice.

通过实例气井动态储量验证对比表明，该方法在理论上是合理的，实际上是可行的。

Numerical examples show that the results are highly accurate in comparison with Newmark、Wilson-θ、Houbolt and central difference method.

算例表明解析逐步积分法和积分型直接积分法比中心差分法、Newmark、Wilson-θ、Houbolt法等有较高的精度。

Later, it makes some comparison with four kinds of modulation technique, and finally, it implements the three-level PWM switching power amplifier with the PWM technique. The power of the amplifier is 2kVA, and the frequency bandwidth is 10～3kHz. In the thesis, the author designs and makes the hardwares of the switching power amplifier. The hardwares contain power inverter rank circuit, control system circuit based on DSP, drive and isolation circuit, and protective circuit. The thesis also analyses the potential safety problems and put forward some solutions for the problems. Furthermore, the thesis accomplishes the software design of the control system, and successfully debugs it. The methods of designing higher power ampilfier are also discussed in the thesis. It analyses the feasibility of the methods, outlines the way of how to design higher power switching power amplifier, and does some experiments with the method of switches-parallelling.

根据电动振动试验系统对开关功放的要求，提出了以电感电流瞬时值控制技术为基础的三电平脉宽调制开关功放的设计方案，并通过系统仿真进行了原理性论证；然后设计并制作了开关功放的硬件，包括功率转换电路，基于DSP的控制电路，驱动、隔离电路以及保护电路；针对开关功放数学模型不易得出的特点，细致分析了模糊自适应PID控制方法，在此基础上编写了控制程序；研制出一台功率为2kVA，通频带为10～3kHz的三电平脉宽调制开关功放；论文中还探讨了实现大功率开关功放的方法，分析了各种方法的可行性，给出了实现大功率开关功放的思路，并进行了并联开关管实现大功率开关功放的实验。

The order analysis method was used,through a comprehensive comparison of complex determination coefficient and residual sum of squares,the optim...

采用逐阶分析方法，通过综合比较回归分析中的复测定系数、残差平方和等方法来确定最优的多项式的阶数，提高了几何误差模型的精确性和鲁棒性，从而使数控机床误差实时补偿更有效。

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。