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pressure spectra
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  压力频谱
     The characters and regularities ofcylinder pressure spectra in different frequencies are revealedto a certain degree by spectrum analysis,and some major parametersthat have influence on cylinder pressure spectra are also discussed.
     通过频谱分析在一定程度上揭示了气缸压力频谱在不同频域时的特征和规律性,同时还讨论了影响气缸压力频谱的一些主要因素。
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  “pressure spectra”译为未确定词的双语例句
     HIGH PRESSURE SPECTRA AND CRYSTAL PARAMETERS OF Na_5 Eu(WO_4 )_4 MICROCRYSTAL
     高压下Na_5Eu(WO_4)_4的光谱和晶场参数
短句来源
     HIGH PRESSURE SPECTRA OF Na_5Tb(WO_4)_4 CRYSTAL
     高压下Na_5Tb(WO_4)_4单晶的光谱
短句来源
     A series of sound pressure spectra obtained by operating type k252 silk loom after removing different components of its picking mechanism show that the two biggest peaks at about 600Hz and 1560Hz in the sound pressure spectrum are generated by the vibration of the frame sides and the impacts among the shuttle,pickers and picking sticks.
     本文利用分部开动法得到:K252丝织机全机开动时声压幅值谱在600Hz和1560Hz左右的两大尖峰分别是由墙板的振动和梭子、皮结、投梭棒之间的相互撞击所致; 并在理论上对撞击噪声的两个组成部分——自鸣噪声及加速度噪声进行了一定的研究和阐述。
短句来源
     Meanwhile the frequency of the peak value of pressure spectra will be two times higher.
     同时,塔群影响使得下游塔压力谱中能量分布相对集中,其峰值频率较孤立塔有成倍的提高。
短句来源
     The author analyzes the pressure spectra of indicator graph,gives a method that is based on reverse Fourior transfer and transmission function to process indicator graph.
     本文通过对SD2100型柴油机实测示功图的频谱特性的研究,提出了一种根据测压通道的传递函数,通过傅立叶逆变换消除示功图压力波动的滤波方法。
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  相似匹配句对
     pressure;
     压力;
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     (3) different wind speed (pressure) spectra;
     (3)不同风速(压)自谱;
短句来源
     HIGH PRESSURE STUDY OF FLUORESCENCE SPECTRA FOR GdOBr:Eu
     GdOBr:Eu荧光谱的高压研究
短句来源
     The Spectra of Hypercubes
     超立方体的谱(英文)
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     At the pressure >1*!
     当气压高于 1Pa时 ,得到厚度很小的ZnS薄膜 ;
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  pressure spectra
Comparisons of spectra above and below the canopy also show some effect of the canopy itself on the shape of the pressure spectra.
      
The shapes of the pressure spectra are affected by changes in windspeed.
      
The predictions are found to be in good agreement with the experimental data both in terms of flow dynamics and pressure spectra.
      
The effects of turbulence on the aerodynamic properties, especially surface-pressure spectra and vortex-induced vibrations, of two-dimensional rectangular prisms with slenderness ratios of 2 and 4 are investigated experimentally.
      
The flapping motion gives rise to the difference in pressure spectra, indicating more intensive pressure activity during the shrinking period of the recirculation region.
      
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A series of sound pressure spectra obtained by operating type k252 silk loom after removing different components of its picking mechanism show that the two biggest peaks at about 600Hz and 1560Hz in the sound pressure spectrum are generated by the vibration of the frame sides and the impacts among the shuttle,pickers and picking sticks.Research on the two catogories of impact noise-ringing noise and acceleration noise is premarily

本文利用分部开动法得到:K252丝织机全机开动时声压幅值谱在600Hz和1560Hz左右的两大尖峰分别是由墙板的振动和梭子、皮结、投梭棒之间的相互撞击所致;并在理论上对撞击噪声的两个组成部分——自鸣噪声及加速度噪声进行了一定的研究和阐述。通过一系列的实验,证实在1560Hz左右的尖峰是由梭子、皮结撞击时的加速度噪声所产生。

In an ideal condition,a mechanical model is abstracted from complexand actual combustion process. According to time measures of cylinderpressure,the frequency region is divided into three parts:low,middle and high frequencies.The characters and regularities ofcylinder pressure spectra in different frequencies are revealedto a certain degree by spectrum analysis,and some major parametersthat have influence on cylinder pressure spectra are also discussed.

本文在理想情况下,将复杂的实际燃烧过程抽象成力学模型进行研究。根据气缸压力随时间的变化,将频域划分成低、中、高三个频域。通过频谱分析在一定程度上揭示了气缸压力频谱在不同频域时的特征和规律性,同时还讨论了影响气缸压力频谱的一些主要因素。

Pressure spectra,vortex shedding resonance and pressure measurements behind spoilers at rest and oscillation were studied in low-speed wind tunnel at Beijin University of Aeronautics and Astronautics.A well defined main frequency and its harmonics exists behind spoiler at rest.Two frequencies with different amplitudes and their harmonics appear at high or low oscillating frequencies.They are approached and merged together at medium oscillating frequencies.Three types of main vortex shedding frequencies...

Pressure spectra,vortex shedding resonance and pressure measurements behind spoilers at rest and oscillation were studied in low-speed wind tunnel at Beijin University of Aeronautics and Astronautics.A well defined main frequency and its harmonics exists behind spoiler at rest.Two frequencies with different amplitudes and their harmonics appear at high or low oscillating frequencies.They are approached and merged together at medium oscillating frequencies.Three types of main vortex shedding frequencies are suggested.Time mean suction peak induced by oscillating spoiler at resonance is higher than that of spoiler at rest.Phase mean pressure is discussed.

本文叙述了低速风洞中静止和振动扰流片振频,振幅与流速等对其后的压力频谱、旋涡脱落、共振与时均压力等的影响。静止时有一个明显自然脱落主频。振动时有两个旋涡脱落频率,有时两者合一。旋涡脱落主频有三种类型:它们分别等于自然脱落主频与振频,以自然脱落主频振动时,上述三种频率相等,产生强共振,此时,其负压值比静止时还大。相位平均压力波动比扰流片振动在相位上有滞后。

 
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