在绝热密度扰动(假定初始扰动是绝热的)的方案中，有两种观念特别值得注意：1，宇宙密度波的观念。
Two ideas are worth notice in the adiabatic scenario (assumed that the initial perturbations are adiabatic) : 1. The idea of the cosmic density wave.
地面入射的大功率无线电波能加热电离层等离子体，引起电离层电子温度和密度的扰动，实现电离层的地面人工变态。
The terrestrial ionospheric plasma can be heated by a powerful ground-based high-frequency radio wave, which results in the disturbance of the electron temperature and density.
干燥的风积沙对扰动很敏感，现行有关规程中的密度测定方法对其均不太适合。
Because the dry wind-blown sand is sensitive to disturbance, the methods for measuring density in current regulations are not appropriate to it.
风的扰动主要包括风速、频率等的变化，并受不同林木密度和复杂地形下的风场分布的影响。
The disturbance of wind mainly means the variety of speed and frequency of wind, and it's affected by forest density and the distribution of wind field under complex landform.
热尘埃等离子体中的非线性尘埃声孤波在高阶横向扰动下是稳定的，且尘埃颗粒的温度、低温离子和高温离子的温度和数密度影响尘埃声波的性质。
The temperature of dust grains, low temperature and high temperature ions and the number densities of the ions influence the property of dust acoustic waves.
通过分析皮托管动压信号的方式，提出了一种基于功率谱密度分布的调节阀扰动信号分析新方法。
A novel method was proposed based on the total pressure of pitot tube and power spectral density.
通过算例证明改进后的气体分子动力学交通流模型对于抑制高密度车流状况下的扰动更为有效，具有更强的稳定性。
A test case validates that the improved gas-kinetic traffic model is more effective on suppressing the perturbation, and more stable at high vehicle densities.
进行了冷态和热态实验，结合理论分析研究了密度锁的抗扰动机理。
The anti-disturbance mechanism of the density lock is analyzed by cold and hot state experiments with theoretical analysis.
然后取扰动黄土配制不同密度、不同含水量试样进行试验，测得黄土导热系数和比热容。
Then taking loess samples with different densities and moisture contents, the coefficient of thermal conductivity and specific volume heat of loess are tested.
然后取扰动黄土配制不同密度、不同含水量试样进行试验，测得黄土导热系数和比热容。
Then taking loess samples with different densities and moisture contents, the coefficient of thermal conductivity and specific volume heat of loess are tested.
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