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The speed also affects combustion noise through variation of advance angle.

推迟供油提前角可以显著降低噪声。2、燃烧系统多参数分析2.1、喷孔数目在喷油压力不变时,减少喷油孔数量,可使促进燃油雾化,使着火延迟期缩短,因而有助于降低压力升高比,汽缸压力频谱线也相应降低,尤其是中、高频成分降的更多些。

Also the intensity of the reconstruction image was studied in the angle of the influenced by the diffraction efficiency. The diffraction efficiency of the low frequency is lower than that of the high frequency.

另外还从物参比的角度分析了非线性曝光对再现光场的影响,即衍射效率对再现光强的影响,得出低频部分的衍射效率低于高频部分的衍射效率,较好的解释了再现像出现了边缘剪切效应的原因。

The consistency of the results from the present method and the scatter center model method are derived from the stationary phase method in high frequency region, whereas the present method is general and suitable for the analysis of angular glint in the entire frequency band.

利用驻相法说明所提方法和散射中心建模方法在高频区的结果是一致的,而所提方法适合在全频带上分析目标角闪烁。更具一般性。

The receptance characteristics of track system has been predicted with the three dimensional track for high frequency vibration, with this model, the structure parameters of track system affect onreceptance have been discussed. The results show that the stiffness of ballast, sleeper mass, and stiffness of railpad are the main factors affecting on resonance and antiresonance under second resonance frequency.

利用轨道系统高频振动模型预测了各种参数对轨道系统导纳特性的影响,结果表明:道床刚度、轨枕质量和轨枕垫刚度是影响轨道系统第二阶共振频率以下共振和反共振的主要因素,随道床刚度增加,或轨枕质量减小,或轨枕垫刚度增加,第一、二阶共振和第一阶反共振频率增加,道床阻尼、轨枕垫阻尼主要影响第一、二阶共振和第一阶反共振振幅,阻尼越大,共振峰值和反共振谷值越平缓。

At present, more than 200 employees, has production capacity of laminates 30, 1:13 aperture ratio to achieve the highest and second-order with the production of HDI technology; and thick, thick copper, mix board, the board high-frequency, high TG board , High-precision impedance board has a wealth of experience in production.

目前公司员工200余人,已具备生产30层板的能力,孔径比最高做到1:13,并具备生产HDI二阶技术;并对厚板、厚铜板、混压板、高频板、高TG板、高精度阻抗板有丰富的生产经验。

Raman measurements show an apparent shift of the G-peak frequency to higher values with increasing annealing temperatures.

非晶金刚石薄膜的可见光拉曼光谱显示随着温度的升高,谱峰峰位向高频偏移。

Objective The purpose of this study was to explore the value of high-frequency sonography in diagnosis of appendicitis.

目的:评价高频超声诊断阑尾炎的价值。

And solutions given by the"exact"infinite series solution are compared with solutions calculated by the approximate formula.

比较了"精确的"无穷级数解法和高频近似解。

And the time needed for calculation using approximate formula is only 2/5 the time for"exact"intinite series solution.

且用高频近似式计算时所用机时仅为用"精确的"无穷级数解法计算时的五分之二。

The controller is designed by the sliding mode control theory and the approximation capability of fuzzy systems.

由于高频切换会导致被控系统产生抖振,必须改善这种现象来实现系统的良好控制性能。

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Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

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