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声速    
相关语句
  velocity
    Generally, the Acoustic log of sandstone shows lower (higher acoustic velocity) 400~800(2500~5500), that of mudstone is higher (lower acoustic velocity) 548~252(1830~3962), when it becomes denser, the acoustic log become lower.
    一般情况是砂岩显示为低声波时差(高声速)400~180(2500~5500),泥岩显示为高声波时差(低声速)548~252(1830~3962),页岩介于砂岩与泥岩之间,砾岩一般具有低时差(高声速),且愈致密时差愈低。
短句来源
    Sonic velocity in 4 kinds of polymer solutions with different concentrations and water was measured,which proves that 1MHz of ultrasonic wave has the similar velocity in both the 4 solutions and water.
    分别对不同浓度的 4种聚合物水溶液与水进行声速测定 ,认为 1MHz超声波在 4种聚合物溶液与水中的传播速度基本相同 ;
短句来源
    4) the variation of velocity and amplitude shows positive correlativity with the penetrability, for instance, rock D7#20 shows low variation because of its low penetrability.
    4)声速和声幅的变化与岩石的渗透率有正相关关系,例如D7#20由于渗透率很低,因此声速和声幅的变化很小.
短句来源
    A Simple Pore Pressure Estimation Method for A Disequilibrium Compaction Shale Using Sonic Velocity
    利用声速检测欠压实泥岩异常高压的简易方法与应用
短句来源
    Selection of first-break timing in using transmitting method for measuring sonic velocity
    用穿透法测量声速时初始点的选择问题
短句来源
更多       
  sound velocity
    The calculation procedures are as follows: 1. Measure sound velocity with the use of interval transit time;
    计算过程为:1.利用声波时差测出声速
短句来源
    2. Get effective stress by using sound velocity;
    2.利用声速求出有效应力;
短句来源
    Through field survey,this paper illustrates there are two factors (motion sensor compensation and sound velocity) mainly effect acquired data quality.
    经过野外调查 ,本文例证了两种要素 (运动传感器补偿和声速 )影响获得数据质量。
短句来源
  sound speed
    Developing dispersion equation with small parameter ε = u02/us2, the square of disturbing velocity over sound speed, and taking the zero order approximation of e, the magnetic diffusion instability can be obtained when the dispersion equation is solved.
    由于沿磁场流动的速度u_0小于声速u_s,即ε=u_0~2/u_s~2是一个小量,在零级近似下解色散方程,得到了磁扩散不稳定性.
短句来源
    (1) A class of steady, self-consistent plasma flows corresponding to the structure of magnetic field consisted of the closed and open regions is given. In the open region, the radial velocity of plasma can be reached the large values exceeded the local sound speed and Alfven speed beyond the several radius of the sun.
    得到了两种不同的解:(1)一种相应于磁场具有闭合区和开场区的稳定、自洽的等离子体流动,开场区几个太阳半径之外等离子体径向速度达到大值,超过了局地声速和局地Alfén速度;
短句来源
    It is shown that only with the Alfven speed higher than the sound speed upstream can a fast shock and a slow shock achieve their spatial connection and temporal evolution via intermediate shocks.
    指出只有当上游背景阿尔文波速超过声速时,才有可能通过中间激波实现快、慢激波之间的空间连接和时间演化.
短句来源
    On the other hand, as the Alfvenic speed is less than the sound speed upstream, the shock linkage occurs only between a slow shock and an intermediate shock.
    当上游阿尔文波速小于声速时,激波连接只限于慢激波和中间激波之间.
短句来源
  acoustic velocity
    Generally, the Acoustic log of sandstone shows lower (higher acoustic velocity) 400~800(2500~5500), that of mudstone is higher (lower acoustic velocity) 548~252(1830~3962), when it becomes denser, the acoustic log become lower.
    一般情况是砂岩显示为低声波时差(高声速)400~180(2500~5500),泥岩显示为高声波时差(低声速)548~252(1830~3962),页岩介于砂岩与泥岩之间,砾岩一般具有低时差(高声速),且愈致密时差愈低。
短句来源
    Taking the well data and well-tie sections in an area as a background, we first analyze thewave impedance with different well data sampling rate and the synthetic seimograms with differentdomnant frequency, and then use various acoustic velocity edels and Rcker wavelet with differentdominant frequency and bandwidth to get seismic asetions through forward modelling.
    以某地区的井资料和联井剖面为背景,首先分析井资料不同采样的声阻抗和不同主频的合成记录,以及用不同的声速模型和不同主频及频宽的Ricker子波对声速模型作正演,得到不同频率的地震剖面。
短句来源
    Based on the analysis of logging data, it is found that effect of porosity and shale content on acoustic velocity is heavier than that of water saturation on it.
    根据对实测测井解释资料的分析 ,认为孔隙度和泥质含量对纵波声速的影响大于含水饱和度的影响。
短句来源
    If the sediment underlying a hydrate entraps natural gas, its acoustic velocity will become much lower, resulting in vivid characteristics of reflections.
    若水合物下方的沉积物捕集了天然气 ,其声速会更低 ,由此产生的反射波具有鲜明的特点。
短句来源
    The monitor composes of sonic emitter,geophone and signal acquisition/process device,utilizing acoustic velocity and time difference between emitted signal and echo signal from liquid surface to calculate the depth.
    该系统由声波发生器、检波器和波形采集处理装置等3部分构成,利用声波发射信号与液面回波信号的时差和声速计算液面深度。
短句来源

 

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  velocity
Specifically, the assumptions on initial data are that the modulo constant is stated at x=+∞ and x=-∞ which may be different, the density and velocity are in L2, and the density is bounded above and below away from zero.
      
The wind turbine imitation system includes not only a hardware platform composed of PC, data-collection board and thyristor-based velocity-regulator, but also monitor software of wind turbine imitation.
      
Low velocity target detection based on time-frequency image for high frequency ground wave radar
      
The threshold wind velocity of a number of variables was studied in four different land-use types: farm land, forestland, wild grassland and a flood plain in the Yongding River sandy land in Beijing.
      
psammophila could accumulate sand because the plant decreased the windward and leeward wind velocity.
      
更多          
  sound velocity
Main mechanisms of absorption and dispersion of sound velocity in microinhomogeneous media are considered.
      
The maximum error in the determination of sound velocity did not exceed 0.1%.
      
The correlation between the sound velocity and the molecular structure of n-alkanes is studied.
      
The Thermodynamic Properties of n-Pentadecane in the Liquid State, Determined by the Results of Measurements of Sound Velocity
      
A net algorithm is used to determine the thermodynamic properties of a liquid by the results of measurements of sound velocity.
      
更多          
  sound speed
The evolution of sound waves in a gas-liquid medium with an inhomogeneous distribution of the sound speed is considered in this paper on the basis of a nonlinear parabolic equation for the amplitude of the sound wave envelope.
      
The sound speed is supposed to be constant, and the bottom slopes are considered as small.
      
Another objective is to determine the features of the sound interaction with internal waves for the sound speed profile of the summer-autumn type for which the water stratification is most pronounced.
      
A specific example of calculating mode amplitudes is analyzed for a deep-water sound channel with a sound speed profile nonadiabatically varying with distance.
      
The propagation of a noise signal is considered for an arctic-type waveguide with a varying sound speed profile.
      
更多          
  acoustic velocity
Statistical characteristics of an acoustic field that are based on the data of simultaneous measurements of pressure and acoustic velocity vector are investigated.
      
No dispersion of the acoustic velocity is revealed.
      
A sharp increase in the acoustic velocity is accompanied by the appearance of an acoustical absorption peak.
      
It is shown that, for potential plasma flows, the flow velocity component normal to the plasma boundary is equal to the ion acoustic velocity.
      
The parameter ranges in which such a plasma can exist are determined, and dispersion relations for ion-acoustic waves are obtained that make it possible to find the linear ion-acoustic velocity.
      
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