查询词典 wave velocity

The main contents include studying purpose, researching object, the introduction about this course; governing equations, boundary conditions for an inviscid irrotational flow, linearized approximation for small-amplitude waves; illuminations of wave factors and relevant physical variables; the propagating waves in deep and shallow water; discussion of physical meanings of group velocity.

包括学习目的、研究对象、主要内容简介；控制方程，描述无粘、无旋运动的边界条件，对边界条件的线性化近似；波要素和有关物理量的介绍；深水和浅水条件下的行波问题；讨论群速度的物理意义。

The principles are as follows:①preliminary interpretation is carried out on crosswell seismic data in depth domain to establish an accurate velocity model;②sinc interpolating function is used in depth-time conversion to realize waveform fidelity;③the recognition of surface seismic data is utilized to ascertain the reflection characteristics of crosswell seismic data in time domain;④ good spatial continuity of surface seismic data is adopted to retrieve the "hopper" defect in crosswell seismic profiles and the deficiency of lateral contrast between crosswell seismic data;⑤in fine calibration of well-side traces of crosswells and surface seismic data, coincident time-depth relation is used to match two seismic data so as to make the calibration more reasonable;⑥in multi-crosswell seismic data inversion by sparse spike inversion method, lateral restraints are strengthened to ensure the continuity of inversed wave impedance profile.

实现反演的基本原理是：对深度域井间地震资料进行初步解释；建立精确的速度模型；在对井间地震剖面进行深时转换时采用sinc插值函数实现波形保真；利用对地面地震资料的认识来落实时间域井间地震资料的反射特征；利用地面地震资料良好的空间连续性弥补井间地震剖面的"漏斗"缺陷和井间资料之间横向对比性的不足；在井间地震和地面地震井旁道精细标定中，通过一致的时深关系来实现两种地震资料之间的匹配，使井旁道的标定更加合理；在利用稀疏脉冲反演方法进行连井井间地震资料反演时，通过增强横向约束保证反演波阻抗剖面的连续性。

The results indicated: the growth features of different size of tomato fruits were much different;the increasing course of small tomatoes showed "ladder" model,and that of big and middle ones showed "wave" model.The daily change of leafstalk stem-flow velocity presented "double-apex" model.

监测结果表明：由于番茄果实的个体差异和前期生长的差异，大、中、小番茄果实的生长规律有明显的差异；小番茄的增长过程呈"阶梯"型，大中番茄的增长过程呈"波浪"型。

Many methods can be used to restore formation denudation thickness , such as stratigraphic correlation, deposition velocity, well log, compaction curve, vitrinite reflectance, sporopollen and wave analysis method, etc.

地层剥蚀厚度恢复的方法有很多种，例如地层对比法、沉积速率法、测井曲线法、压实曲线法、镜质体反射率法、孢粉法及波动分析法等。

In order to enlarge capacity building size and to enrich exploitation seismic interpretation methods, gamma log curve without container rock velocity information and resistivity logging curve were converted to realize the purpose of seismic inversion as pseudo sound wave curve, and to make the seismic inversion data volume have information of shale content and oiliness and help to predict the sandstone thickness and oiliness of reservoir bed.

为扩大油田产能建设规模、丰富开发地震解释方法，本文把不具备储层速度信息的伽玛曲线、电阻率曲线通过一定的转换，实现作为伪声波曲线进行地震反演的目的，使地震反演数据体加入泥质含量及含油性两种信息，有助于进行储层砂岩厚度预测及储层含油性预测。

From many experiments conducted by the author on the dynamic behavior of soil inrecent years it has been found that the propagation velocity of elastic wave,shear modulus andthe coefficient of subgrade rigidity in homogeneous soil tends to vary with depth.

近几年来，作者在对土的动性能所作的多次实验中，发现匀质土中弹性波的传播速度、剪切模量、地基抗压刚度系数有随土层深度而变化的现象。

The advantage of WPRT in stack velocity analysis is simple and highly accurate, and WPRT can also effectively process the seismic data with multiple reflection wave.

加权抛物Radon变换叠加速度分析算法容易实现，且计算精度较高，能较有效地处理含多次波的地震剖面。

RESULTS: The type of compression of nerve trunk manifested as slower sensory and motor conduction velocity of nerve dominated by corresponding trunk across axillary section,lower wave amplitude and loss of nerve of corresponding muscle.

结果：各干受压型表现为相应干所支配神经跨腋段感觉、运动神经传导速度减慢、波幅降低及相应肌肉失神经改变。

OCCAM algorithm has been successfully used to invert transient Rayleigh wave dispersion curves for lower velocity layers.

OCCAM算法在大地电磁测深资料反演中已获得了成功应用。

In order to know interval velocity in layered acoustic medium,re- locity analysis is made using wave field continuation and fuzzy decision theories.

为了获得层状声学介质的层速度参数，文中依据波场延拓理论和模糊决策理论改进了速度分析。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。