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recording
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  记录
    The Application of Tape Recording in Earthquake Observation
    磁带记录在地震观测上的应用
短句来源
    THE STUDY OF CRUST AND UPPER MANTLE STRUCTUREBELOW THE RECORDING STATION BY MEANSOF TELESEISMIC P WAVEFORMS
    利用深源远震记录波形研究台站区域的介质结构
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    THE STUDY OF MULTILAYER-MEDIA BENEATH THE RECORDING STATIONS AT ZHUNGEER BASIN EDGE IN XINGJIANG REGION BY MEANS OF TELESEISMIC P WAVEFORMS
    利用深源远震记录波形研究新疆准噶尔盆地边缘台站区域的地下介质分层结构
短句来源
    Brief Introduction to RSM-08 Multi-Channel Apparatus of Transient Signal Recording and Processing
    RSM-08多通道瞬态信号记录处理仪性能简介
短句来源
    CH-86 SHALLOW ANALOG LIGHT SPOT RECORDING SEISMOGRAPH
    GCH-86型浅层模拟光点记录地震仪
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  “recording”译为未确定词的双语例句
    TWO FUNDAMENTAL THEOREMS OF AMPLITUDE RECOVERY FROM SIGN-BIT SEISMIC RECORDING
    符号位地震记录振幅恢复理论的两个基本定理
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    MODEL SD-1 DIGITAL MT RECORDING SYSTEM
    SD-1型数字大地电磁记录系统
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    The equation of input voltage in seismic recording instrument——The response analysis of geophone array,
    地震仪器的输入电压方程——检波器组合特性分析
短句来源
    Analysis of Problem Relating to Waveform Tape Recording in CSU
    CSU全波列记带问题的分析
短句来源
    Error Analysis on Hyperbolic Function and Other Recording Modes
    双曲函数记录方式与其它记录方式的误差分析
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  recording
Magnetic properties of nanowire arrays may be developed to ultra-high-density recording on the quantum disk.
      
A method of distributed coding of digital images was proposed in imitation of the holographic principle of image recording.
      
Analysis of the parameters of "Magnetic Disk-Magnetic Head" pair for magnetic recording
      
For various recording densities, the levels of the playback signal and the resolution coefficient were determined.
      
Several other analogs had a week sleep-inducing effect, increasing the proportion of slow-wave sleep during specific recording time only.
      
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The problem of primary importance in the study of reflection or refraction seismograms is to recognize effective impulse on the records. If a single seismometer were utilized to determine movement of the ground following a shot, it would generally be quite difficult to distinguish with surety the effective waves from spurious energies recorded on the seismogram. In seismic prospecting, the visual identification of effective waves is made possible by the method of simultaneously recording the motion of...

The problem of primary importance in the study of reflection or refraction seismograms is to recognize effective impulse on the records. If a single seismometer were utilized to determine movement of the ground following a shot, it would generally be quite difficult to distinguish with surety the effective waves from spurious energies recorded on the seismogram. In seismic prospecting, the visual identification of effective waves is made possible by the method of simultaneously recording the motion of ground by using as many as 20 to 60 separate detecting seismometers on the same record. The alignment of the impulsive forms across the seismogram is usually referred to as "line-up" or "cophasal-axis" of seismic signal. By using the general probability distribution function of Rayleigh and assuming that seismic waves, are of the Ricker wavelet form, the problem of determining how far random noise statistically limits the detection of seismic cophasal axis in seismogram is studied. The idea that determination of signals of minimum detectable signal—threshold and the dependence of signal threshold on some kinds of parameters was discussed in detail. It may be of interest to mention that signal threshold may be controlled by such interference systems as multiple seismometers, pattern shooting, mixing circuits and magnetic head combination method in reproduction.

在地震勘探中,有效地震波是在干扰背景上进行記录的,在記录上識別有效波一直是地震勘探的基本問題。本文中,我們假定地震脉冲是雷克对称形式的波漣,用随机过程分析法,討論了地震脉冲在平稳正态分布随机干扰影响下的幅度和相角分布函数及其它主要的統計特点,并指出地震脉冲波同相軸能够予以識别的条件,同相軸的可靠程度,能够予以識別的同相軸对应要求的最少地震脉冲波瞬时强度——門限值,并分析了用組合方法控制門限值的方法。

In seismic detection, the principal sources of random noises are microseisms, instantaneous fluctuations of apparatus and extraneous disturbances caused by shooting. The former two sources are independent of shooting. They could be measured easily, and their auto- and cross correlation functions are useful for designing the array arrangement and the prediction filter to improve the signal-to-noise ratios of the first arrivals in the records. But the latter one, that is, the extraneous wave caused by the shot,...

In seismic detection, the principal sources of random noises are microseisms, instantaneous fluctuations of apparatus and extraneous disturbances caused by shooting. The former two sources are independent of shooting. They could be measured easily, and their auto- and cross correlation functions are useful for designing the array arrangement and the prediction filter to improve the signal-to-noise ratios of the first arrivals in the records. But the latter one, that is, the extraneous wave caused by the shot, travels to the detecting stations together with effective waves. The waveforms and times of arrivals of the signals differ from place to place and are usually unknown. Therefore, the ordinary time series analysis method seems somewhat complicated owing to the unstationary nature of the phenomenon. The present study is concerned with a statistical method for the moment at which a closely spaced array that makes effective wave recording at the same time in all the detectors in an array. The spatial correlation function that is independent of the signals can be evaluated. Based on the space correlogram obtained in some regions of China, the problem of how far the signal-to-noise ratio can be improved by multiple detection is discussed. It is shown that the improvement of signal-to-noise ratio depends not merely on the number of seismometers in a single group, but also on distances between them, and on the space correlation function. A procedure which gives optimum distance between seismometers in a group is described and it can easily be used in seismic field operation.

假定随机干扰是对位置平稳的随机变量,利用固定瞬间多道记录统计分析方法,讨论了组合地震法的统计效应及其效益,提出了在线性等距组合形式中组內间距选择以适应信杂比最大的条件,并讨论了选用组合形式和组內间距的方法。

The continuous increase of seismic stations in China has been accompanied by the rapid development of the study of regional earthquakes. The data of a series of minor earthquakes has been accumulated. On the other hand, in every sequence of earthquakes, the number of minor earthquakes has always been much more than that of greater earthquakes. Therefore, the study of the mechanism of minor earthquakes is quite neccessary. It is an intention in this paper to propose a method for studying the mechanism of minor...

The continuous increase of seismic stations in China has been accompanied by the rapid development of the study of regional earthquakes. The data of a series of minor earthquakes has been accumulated. On the other hand, in every sequence of earthquakes, the number of minor earthquakes has always been much more than that of greater earthquakes. Therefore, the study of the mechanism of minor earthquakes is quite neccessary. It is an intention in this paper to propose a method for studying the mechanism of minor earthquakes. The method adopts the double couple model and uses three variable angles to determine the orientation of the principal axes of stress. To solute the three variable angles, we use the mutual ratios of first motion amplitude of four stations to establish three independent equations. The method requires at least four stations and only one component good recording at every station. The characteristics of seismometer are required. The effects of ground surface and the limitation for magnitude are discussed.

随着我国地震台网的不断增密,区域地震的研究正在迅速发展,所面对的资料是大量小地震。此外,在任何一个地震序列中,小地震的数量总比大地震多得多。因此研究小地震的机制非常必要。本文试图给出一个研究小地震机制的方法。此方法采用双力偶点源模型,通过三个变角来确定应力主轴的取向。为了求解三个变角,利用四个地震台初动振幅的相互比值建立了三个方程。此方法要求至少有四个地震台,而每个台只要有一个分向的良好记录即可。对地震仪的特性提出了要求,对地面影响和此方法的震级限度作了讨论。

 
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