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response
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  响应
    Forming of the Three Gorges of the Yangtze River and Sedimentary Response in the West Edge of Jianghan Basin and Adjacent Area
    长江三峡的贯通与江汉盆地西缘及邻区的沉积响应
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    Study on Earthquake Dynamic Response of Mining Damaged Stratum Structures
    采动损伤地层结构地震响应研究
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    Studying on Inversion Method and Application of Logging While Drilling Response
    随钻测井响应反演方法及应用研究
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    Study on Low Strain Dynamic Response Theory for Bolt-Surrounding Rock System and Its Application
    锚杆—围岩结构系统低应变动力响应理论与应用研究
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    Research on Wave Propagation Characteristics and Dynamic Response in Partially Saturated Soils
    准饱和土波动特性及动力响应研究
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  “response”译为未确定词的双语例句
    Response Analysis of a Buried Pipeline Crossing the Fault Based on Shell-Model
    基于壳模型的埋地管线抗震分析
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    A STUDY OF THE DYNAMIC RESPONSE OF MODEL DSL—1 PORTABLE SEISMOGRAPH
    DSL—1型流动地震仪的动态特性研究
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    The seismic response of Paleogene sand bodies in Bohai Sea basin and their hydrocarbon bearing conditions
    渤海湾盆地下第三系砂岩体的反射特征及含油气条件
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    The response characteristic or geophone array
    检波器组合的工作特性
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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
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  response
The compound 12 was found to be five times more potent than 11 in reducing twitch response to nerve stimulations, indicating the importance of extended interonium distances and 17-acetoxy function for potent antagonist activity.
      
in 1998, statistical curvature, and the local influence of the response vector perturbations are investigated in NRDM.
      
Existence of positive solution for a two-patches competition system with diffusion and time delay and functional response
      
The parameter estimation and the coefficient of contamination for the regression models with repeated measures are studied when its response variables are contaminated by another random variable sequence.
      
This paper is devoted to studying a free boundary problem modeling the effects of drug resistance and vasculature on the response of solid tumors to therapy.
      
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In this paper, the problem of equivalence of a pressurized cavity and a center of explosion in the generation of seismic waves is first discussed. The displacement field caused by an explosion in a spherical cavity situated in a layered medium is then calculated by first finding the impulse response of the medium and then con-volving it with the equivalent point source function.For a homogeneous half space, the transient solution for the displacement of the free surface is determined by three dimensionless...

In this paper, the problem of equivalence of a pressurized cavity and a center of explosion in the generation of seismic waves is first discussed. The displacement field caused by an explosion in a spherical cavity situated in a layered medium is then calculated by first finding the impulse response of the medium and then con-volving it with the equivalent point source function.For a homogeneous half space, the transient solution for the displacement of the free surface is determined by three dimensionless parameters in terms of which the exact solution for the far field is found and the motion near the explosion is also discussed. Finally, the formal solution for the spectrum of the surface displacement caused by a cavity explosion in a layered medium is derived.

本文首先讨论了压力空腔和爆炸中心的等价问题。计算层状介质中的空腔爆炸所产生的位移场时,可先求介质的单位脉冲响应,然后将其与等价的爆炸点源函数做褶积。对于均匀的半空间,自由面位移的暂态解是由三个无量纲的参数所决定的;由此可导出远场位移的精确解。本文也讨论了爆炸点附近的运动。最后还导出多层介质中空腔爆炸所产生的表面位移谱的形式解。

Using the observational data of small earthquakes which occurred in Qiaojia andShimian, it is found that the half period of first P arrivals is nearly constant for theshocks of small magnitudes, and increases proportionally with magnitudes for largerearthquakes. It is also pointed out that the logarithm of the amplitudes of theinitial motion of P-waves increases proportionally with the magnitudes. Taking aradially expanding circular shear crack with uniform dislocation as the theoreticalmodel of the moderate...

Using the observational data of small earthquakes which occurred in Qiaojia andShimian, it is found that the half period of first P arrivals is nearly constant for theshocks of small magnitudes, and increases proportionally with magnitudes for largerearthquakes. It is also pointed out that the logarithm of the amplitudes of theinitial motion of P-waves increases proportionally with the magnitudes. Taking aradially expanding circular shear crack with uniform dislocation as the theoreticalmodel of the moderate and small earthquake sources, the far-field displacement ofseismic body waves radiated from such a model is derived.By using the expression offar-field displacement, the quantitative relations between the source parameters, wavevelocities and the half period, the amplitude of the first arrivals are inferred, andconsequently, the empirical relationships between the half period as well as theamplitude of the first P arrivals and the magnitude of earthquakes are explained.Considering the attenuation and dispersion of waves in the medium, the effect ofthe free surface as well as the response characteristics of the seismograph instru-ments, the theoretical seismograms from this dislocation source are synthesized bythe convolution technique, and a method by which the source parameters as well asQ value of the medium can be directly determined from the half period and theamplitude of the first P arrivals on the observed seismograms, is proposed. By apply-ing the present method, the source parameters of small earthquakes as well as Qvalues of the medium of the two regions metioned above are estimated. The Q valuesof the medium of the Qiaojia region and the Shimian region are 620 and 560, res-pectively. The stress drops of the small earthquakes in the Shimian region areestimated to be about 2 to 30 bars,and that of the small earthquakes in the Qiaojiaregion, are rather low and close to each other, the mean value of which is about 1.4bars. Comparing these results with the stress drops of the foreshocks and the mainshocks of the Xinfengjiang (1962) and Haicheng (1975) earthquakes, we note the fact that the small earthquakes in the Qiaojia region are similar to the fore-shocks of these two large shocks in the character of their stress drops, and so it maynot be neglected that these small shocks in the Qiaojia region are foreshocks priorto a larger earthquake. Taking the mean value (about 1.4 bars) of the stress dropsof the small earthquakes as an estimation of the lower limit of the stress drop ofthis hypothetical earthquake, it may be inferred that, from the empirical relationshipbetween the stress drop and the magnitude of the mainshock, the lower limit of themagnitude of this hypothetical earthquake will be about 5.2.

根据巧家、石棉的小地震的观测资料,指出P波初动半周期在震级比较小时几乎是恒定的,在震级比较大时随震级的增大而增大;并指出P波初动振幅的对数也随震级的增大而增大。以圆盘形均匀位错面作为中、小地震震源的理论模式,计算了它所辐射的地震波远场位移,从而导出了体波初动半周期及振幅与震源尺度及波速等物理量的定量关系,解释了P波初动半周期及振幅与震级之间的经验关系。考虑到波在介质中的衰减和频散、地表面的影响以及地震仪器的频率特性,通过褶积方法合成了上述位错源产生的理论地震图,提出了直接由实际地震图上的初动半周期及振幅测定震源尺度、地震矩、应力降和错距等震源参数以及介质的晶质因数Q的方法.运用上述方法,测定了巧家、石棉两地区介质的品质因数Q和小震的震源参数.这两个地区介质的品质因数Q分别为620和560.石棉地区小地震的应力降大约在2—30巴之间,巧家地区小地震的应力降比较接近,平均约1.4巴.将这个结果和1962年3月19日新丰江地震与1975年2月4日海城地震的前、主震的应力降作对比,我们看到,巧家地区小震的应力降的特征与上述两次大地震的前震的应力降的特征是类似的,因此不能排斥巧家地区的小震是一个较大地震的前震的可能性....

根据巧家、石棉的小地震的观测资料,指出P波初动半周期在震级比较小时几乎是恒定的,在震级比较大时随震级的增大而增大;并指出P波初动振幅的对数也随震级的增大而增大。以圆盘形均匀位错面作为中、小地震震源的理论模式,计算了它所辐射的地震波远场位移,从而导出了体波初动半周期及振幅与震源尺度及波速等物理量的定量关系,解释了P波初动半周期及振幅与震级之间的经验关系。考虑到波在介质中的衰减和频散、地表面的影响以及地震仪器的频率特性,通过褶积方法合成了上述位错源产生的理论地震图,提出了直接由实际地震图上的初动半周期及振幅测定震源尺度、地震矩、应力降和错距等震源参数以及介质的晶质因数Q的方法.运用上述方法,测定了巧家、石棉两地区介质的品质因数Q和小震的震源参数.这两个地区介质的品质因数Q分别为620和560.石棉地区小地震的应力降大约在2—30巴之间,巧家地区小地震的应力降比较接近,平均约1.4巴.将这个结果和1962年3月19日新丰江地震与1975年2月4日海城地震的前、主震的应力降作对比,我们看到,巧家地区小震的应力降的特征与上述两次大地震的前震的应力降的特征是类似的,因此不能排斥巧家地区的小震是一个较大地震的前震的可能性.以测得的小震应力降的平均值(约1.4巴)作为这个可能发生的较大地震应力降的下限估计值,从主震震级和主震应力降的经验关系可以推知,其震级的下限是5.2级.

In order to discern slowly varrying weak anomalies on a background of noise field and to deal with problem like limiting the instability of the solution due to high-frequency magnification of errors in the series of calculations such as the downward-continuation of potential field, this paper discusses the designing principles of an optimum linear digital filter in the least square sense. This may be transformed into the mathematical problem, namely how to select the optimum filtering function in the space of...

In order to discern slowly varrying weak anomalies on a background of noise field and to deal with problem like limiting the instability of the solution due to high-frequency magnification of errors in the series of calculations such as the downward-continuation of potential field, this paper discusses the designing principles of an optimum linear digital filter in the least square sense. This may be transformed into the mathematical problem, namely how to select the optimum filtering function in the space of the L2 linear normed function. It would be very complicated and difficult, if the problem is to be solved directly in the space domain. We found that it may be mathematically much simplier and more rigorous, if we should directly select the trnasfer function or the wave-number response of the optimum linear filter in the wave-number domain by using the method of isoperimetric problem in calculus of variations. In this way, the expression of the transfer function of the selected optimum linear filter is quite simple, namely,L(f,k)=|Si(f, k)|2/{|Si(f,k)|2+λ|Ni(f,k)|2}where|Si(f,k)|2 and |Ni(f,k)|2 express the energy spectra (or the power spectra) of the filter input signal and noise respectively; f, k are wave numbers on the x and y directions.In regard to the above-mentioned two types of the problem and the two related optimum linear filters, the expressions of L(f,k) are the same. They differ only in the conditions of selecting the parameter (λ).After setting up the theoretical expression of the transfer function L(f,k) of the optimum linear filter, we should be able in the least square sense to examine various linear filtering methods, so far published in foreign and domestic literatures in solving the above-mentioned two types of the problems and to show that the optimum results of the linear filtering can be achieved theoretically for different signal and noise conditions. Thus, it provides theorectical criterion for designing two-dimensional linear digital filters.For the observed results of the harmonic functions of potential fields, the above theory can be applied easily to the designing of optimum linear digital filters, but only in the approximate manner.

针对如何在干扰场的背景上区分出低缓异常,以及在位场的向下延拓一类计算中如何限制因误差的高频放大所导至的解的不稳定性等问题,本文探讨了在“最小二乘”意义下的最佳线性数字滤波器的设计原理,并将它转化为下述数学问题,即在L_2线性赋范函数空间中如何选取最佳滤波函数的问题。在空间域中直接解这个问题是十分复杂和困难的,我们发现在波数域中用变分法中的等周问题的解法直接选取最佳线性滤波器的传输函数(或波数响应),则在数学方法上既简单又严格。这样选取的最佳线性滤波器的传输函数L(f,k)其表达式也很简单,即L(f,k)=|S_i(f,k)|~2/{|S_i(f,k)|~2+λ|N_i(f,k)|~2}。式中,|S_i(f,k)|~2及|N_i(f,k)|~2分别代表滤波器输入端讯号和干扰的能谱(或功率谱),f、k分别代表x、y方向上的波数,λ为大于零的常数。 对上述两类问题以及相关的两种最佳线性滤波器而言,L(f,k)的表达式是相同的,而区别仅在于其参变量λ的选取条件不同而已。 有了最佳线性滤波器的传输函数L(f,k)的理论公式,就可以在最小二乘的意义下分析和评价国内外所发表的解决上述两类问题的各种线性滤波方法,并能指出在不...

针对如何在干扰场的背景上区分出低缓异常,以及在位场的向下延拓一类计算中如何限制因误差的高频放大所导至的解的不稳定性等问题,本文探讨了在“最小二乘”意义下的最佳线性数字滤波器的设计原理,并将它转化为下述数学问题,即在L_2线性赋范函数空间中如何选取最佳滤波函数的问题。在空间域中直接解这个问题是十分复杂和困难的,我们发现在波数域中用变分法中的等周问题的解法直接选取最佳线性滤波器的传输函数(或波数响应),则在数学方法上既简单又严格。这样选取的最佳线性滤波器的传输函数L(f,k)其表达式也很简单,即L(f,k)=|S_i(f,k)|~2/{|S_i(f,k)|~2+λ|N_i(f,k)|~2}。式中,|S_i(f,k)|~2及|N_i(f,k)|~2分别代表滤波器输入端讯号和干扰的能谱(或功率谱),f、k分别代表x、y方向上的波数,λ为大于零的常数。 对上述两类问题以及相关的两种最佳线性滤波器而言,L(f,k)的表达式是相同的,而区别仅在于其参变量λ的选取条件不同而已。 有了最佳线性滤波器的传输函数L(f,k)的理论公式,就可以在最小二乘的意义下分析和评价国内外所发表的解决上述两类问题的各种线性滤波方法,并能指出在不同的讯号与干扰条件下,在理论上线性滤波可能达到的最佳效果,从而为设计二维线性数字滤波器时,提供一个理论上的准则。 对位?

 
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