查询词典 method

With this method can the quasi three-dimensional velocity distribution be evaluated conveniently and visually. More importantly, turbine performance prediction and rotor flow analysis, which were important but isolated in former turbine design method, were integrated through this evaluation method to form a more reasonable turbine design method.

该方法不仅能方便、直观地评价涡轮叶轮准三元速度分布，为优化叶片设计提供依据，更重要的是，将此方法计算出的涡轮叶轮速度分布评价指标应用于叶轮损失模型中，可以将涡轮设计体系中独立的两个重要分析手段——叶轮流动分析和涡轮性能预测结合起来，形成更为合理、完善的涡轮设计方法。

Based on this, aim at the disadvantage on Wigner Distribution and Fractional Fourier Transform that can't restrain noise interference effectively when be used to detect Linear Frequency Modulated signals interfered by heavy noises, we proposed a improved WD. Simulation results show that this method can restrain noise interference effectively and improve the ability of LFM signals detection. On the other hand, in multi-component cases, WD suffers from the cross-terms, which may impair some of the auto-terms. In order to separate original multi-component signals into components and reconstruct them separately, we can use the method of optimal filtering in fractional Fourier domain. But this method also has a problem that if signals have aliasing in the fractional Fourier optimal domain as well, the reconstructed signals will be distorted. In this thesis, a novel method of quasi Fourier transform is proposed in order to solve the problem of multi-component signal reconstruction, and have good results.

在此基础上，针对Wigner分布和分数维傅里叶变换在处理高噪声背景下线性调频信号检测的问题时存在不能有效抑制噪声干扰的缺点，提出了改进Wigner分布的办法，该方法能够抑制噪声，提高信号的检测能力；针对Wigner分布在处理多分量非线性调频信号时存在干扰项的缺点，以及分数域最优滤波方法在处理多分量非线性调频信号分离重构问题时存在的局限性，该局限性表现为在对最优分数域上也有信号分量重叠的情况进行处理时重构信号发生畸变，提出了新颖的类傅里叶变换的方法，该方法对在最优分数域上也有信号分量重叠的情况也能处理，得到的重构信号失真很小。

On the basis of the performance of the pavement, three typical samples of aggregates for wearing course are tested to determine squeezing and filling effects between coarse aggregate and fine aggregate, medium effects between asphalt cement and mineral filling material. Meanwhile, matrix analysis method is adopted to establish prediction model for properties of asphalt mixture and complete procedure of a new type asphalt mixture design method is proposed according to volumetric design method and requirements on properties of asphalt mixture and the method has applied for national patent.

研究建立了玄武岩、锰铁合金渣和含燧石碳酸盐岩三类路面耐磨集料体系，以路面性能要求为基础，试验考察了集料的嵌挤效应与填充效应以及沥青胶浆的介质效应，以体积设计法为基础，应用数值分析方法，提出了新型沥青混合料设计方法，并已申请了国家发明专利。

The mathematical model of complex countercurrent multi-effect evaporation with condensed water flash is established, which aims at minimum annual cost (including cost of fresh vapor, vacuum pump power, evaporator, maintenance and depreciation).Based on such decisive variables as the pressure of fresh vapor, the pressure of condenser and heat-transfer mean temperature difference of vari-effect,the model is solved by the complex method,Lagrangian multiplier method, iteration method and matrix method.The practical example indicates that the influence of the pressure of fresh vapor, the pressure of condenser and flash of condensed water on the optimum design results is notable.

建立了带有冷凝水闪蒸的复杂逆流多效蒸发系统优化设计的数学模型，该模型以整个蒸发系统的年总费用(包括加热蒸汽年费用、真空泵年动力费用以及蒸发器和辅助设备的年折旧维修费用等)最小为优化目标，以生蒸汽压力、冷凝器真空度及各效有效传热温度差为决策变量，提出一种新算法———复合形法结合Lagrangian乘子法、迭代法和矩阵法求解模型。

It is necessary to guide the college students build psychological self-defense mechanism by applying various approaches like catharsis method,method of persuasion and communication,self-suggestion method,method of transposition and projection and d...

应指导大学生学会运用宣泄法、疏导沟通法、自我暗示法、移置投射法，运动解压法建立自我心理防御机制，学会心理自助，调节自己的内心冲突，有效缓解就业心理危机。

Trypsin method was used in combination with sevage method while getting rid of the protein, corn smut fungus' thick polysaccharide purification effect was better than the method of sevage method.

胰蛋白酶法与Sevage法结合使用脱除蛋白质时，玉米黑粉菌粗多糖的纯化效果优于单独使用Sevage法。

The results of the study showed that:① Using dozens of kilograms of explosives the signal can be detected at distances up to 200 km;②Active source has a certain degree of repeatability among different shots;③This paper presents the following shooting mode and signal detection method based on the similarity of different shots: In light of the similarity between the signals of big shot and small shot, this paper presents a cross-correlation method using signal from big shot signal with high SNR and small shot signal to detect weak small shot signal, the method can effectively detect the small shot signal and pick up the start time of phase, this method can help us make full use of past seismic exploration data records.

野外实验采用1次大当量激发和16次小当量激发，研究结果表明：①有可能利用数十公斤当量的炸药实现200km距离的探测；②在激发条件相同时，不同当量的激发波形滤波后存在一定的相似性；③依据人工震源可重复性采用以下的激发组合方式和处理方法能够有效提高信噪比：针对大当量激发与小当量激发波形的相似性，利用大当量激发的波形作模板与小当量激发的波形作相关，可判断台站是否接受到小当量激发的信号并检测其震相到时信息。

Several methods, such as the capacitance network balance method, the induced voltage method, the series-wound resistance method and the series-wound capacitance method, were proposed, designed, simulated and tested.

主要对电容网络平衡电路法、感应电动势法、串联电阻法、串联电容法等方法进行了理论分析、设计、模拟和实测。

The pattern recognition method mainly counts pattern-recognition method, sentence structure pattern- recognition method, fuzzy set to discern the pattern-recognitions of the method, artificial neural network, etc.

图像识别的方法主要有统计模式识别方法、句法模式识别方法、模糊集合识别方法、人工神经网络的模式识别等。

Any method of the citrate sol-gel method, the self-propagating method or the coprecipitation method is adopted to prepare the product required.

采用柠檬酸盐溶胶-凝胶法、自蔓延法或共沉淀法中任一种制备得到所需产品。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。