The amplitude variation of reflection were influenced and controlled by many factors.
地震波反射振幅的变化受诸多因素的影响和控制。
The amplitude variation of seiches is related to the air pressure, wind field and rainfall above the lake.
定振波振幅的突变与气压场、风场和降水分布不均匀并在短期内发生突变有关。
The results show that the phase difference and the amplitude variation can be considered as the criteria of seam tracing.
结果表明： 对称位置接收到的声发射信号的相位差和幅值差可以作为电弧超声焊缝跟踪的依据。
The dam site valley of Hongjiadu Hydropower Station is narrow, amplitude variation of water level and discharge at it are large.
乌江洪家渡水电站坝址河床狭窄、水位流量变幅大。
AVO is a seismic exploration technology using the characteristics of amplitude variation versus offset to recognize the rock types and oil-gas reservoir.
是利用振幅随偏移距变化特征分析和识别岩性和油气藏的地震勘探技术。
Thermoacoustic theory has been studied particularly by exploring the time structure of acoustic signals and the law of acoustic pulse amplitude variation.
通过对水声信号的时间结构和声脉冲幅度变化规律的测定，着重研究了热声理论。
The result shows that there are main periods in the amplitude variation, such as about 6.5-year and 40-year, and the periods have the character of variation with time.
结果表明，极移振幅变化中存在着约6.5年和约40年的主要周期，且它们均具有一定程度的时变性。
In the analysis of data with amplitude variation, low-frequency signals may appear as decomposed results, referred to hereafter as filtered low-frequency signals (FLSs).
在变振幅的数据分析中，低频信号可以反映在低频分析结果中，也可以体现在高频信号的振幅变化中。
Result Amplitude variation laws of the stapes footplate and umbo were obtained by comparing the frequency response analytic results between the normal ear and pathological ear.
结果利用人耳数值模型进行正常耳和病变耳的谐响应分析，得到正常耳和病变耳镫骨底板和鼓膜凸的振幅变化规律。
The position of the image and the amplitude variation in the optical field are associated with the focus and the distance from the object to the front focal plane of the lens system.
象的空间位置和光场振幅的变化与透镜系统的焦距以及物体距焦平面的位置有关。
Discriminator: a device that converts a property of an input signal such as frequency or phase into an amplitude variation depending on how the signal differs from a standard or reference signal.
鉴别器，鉴频器：一种将输入信号的某一特征，如频率或相位转变为幅度变化装置，其变化大小因信号与标准或参考信号的不同程度而异。
However, in the presence of amplitude variation with offset (AVO), and particularly at large offsets, reflection coefficients and polarities may differ significantly from those at normal incidence.
然而，在振幅随炮检距变化的情况下，即当偏移距范围很大时，无论是反射波的振幅还是极性都发生了非常大的变化。
This modification incorporates explicitly the duration of strong earthquake ground motion into the time dependent variation of the root-mean-square peak amplitude.
这个修正明显地将强震运动的持续时间包含在均方根振幅依赖于时间的变异中。
It is also analyzed that amplitude and phase changes of annual term in mean sea level variation with latitude.
进一步分析了海平面上升速率及周年项振幅和相位随纬度变化情况。
From this model section, a formula is obtained for calculating the amplitude of relative apparent annual variation of resistivity at a station characterized by two resistivity layers.
从此观点出发，导出以二层电性剖面为特征的台站正常地电阻率相对似年变化幅度公式。
The difference between different underlying surfaces only helps increase or decrease the daily variation amplitude of the elements.
下垫面差异只起到加强或缓和气象要素日变化幅度的作用。
The phase accords with other observation results basically, while the amplitude of variation is double. Our result of the amplitude is more close to the theory value (0.17%).
相位基本与其它观测结果相符，而变化幅度大1倍，我们的结果更接近于理论估计结果（0.17%）。
From the 10min variation of the greatest amplitude of air pressure at each station, the intensity and time of occurrence are well related with rainfall.
由各站气压10分钟最大振幅变化看其强度大小及出现时间都与降水有较好关系。
With the increase of soil depth, daily variation amplitude of soil temperature decreases.
随着土壤深度的增加，地温日变幅逐渐减小。
The greater the period of pressure variation in well air is, the greater is the response amplitude of well water level, while the smaller is the phase lag of the response.
井口空气压力变化的周期越大，则井水位的响应幅度越大，而响应的位相滞后越小。
After the peak runoff rate, sediment concentration decreases and variation amplitude reduces.
峰值径流流量后，含沙量降低，表现为变化幅度小的低含沙量特征。
The large scale and amplitude of gravity field anomaly variation appeared in north Shanxi area before the earthquake.
晋北地区地震前后出现了明显的重力场变化，并具有异常范围大、幅度高的特点。
The larger the variation of amplitude and frequency of time-varying feed rate, the better the effect of suppressing chatter under some conditions.
在一定的条件下，时变进给量变化幅度及变化频率越大，抑振效果越好。
Using the 10th International geomagnetic Reference Field (IGRF) models, the latitudinal distribution of harmonic amplitude and its time-variation of geomagnetic potential are investigated.
利用第10代国际参考地磁场模型(IGRF)的资料，研究了地磁位的谐波振幅的纬度分布及其时间变化。
The mean pressure, mean intensity, and the coefficient of variation of amplitude of the signal propagated in wave-guide were obtained in this paper.
本文得到了在波导传播中的无方向性点源的平均声压、平均强度和声信号振幅的起伏率。
The variation of the amplitude has much more important influence on the suppressing chatter effect than that of the frequency.
在优选条件范围内，时变进给量幅度变化对抑振效果的影响比时变进给量频率变化的要大。
And also the variation of the wave packet amplitude and energy has been discussed.
此外，还讨论了沿波射线波包振幅和能量的变化。
The variation of R wave amplitude has little relation with cardiac output, heart pumping function, especially with pulmonary wedge pressure.
波振幅的改变与心输出量及心脏的泵血功能，尤其是肺动脉楔压之间无明显关系。
The bathymetric variation consists of a slowly varying component and a fast, small amplitude varying component.
其中的地形变化包括慢变分量和小振幅快变分量。
The asymptotical stability of the subharmonic resonances and the sensitivity of the amplitude responses to the variation of damping coefficient were examined.
考察了亚谐响应幅值系数对阻尼的敏感性及亚谐振动谐波成分的渐近稳态性。
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