查询词典 attenuation

The upper crust of the Altun orogenic belt has a high average Q value (about 500). It is likely caused by shallow depth of crystalline basement, outcrop of basement rocks, and slow attenuation of seismic wave.

阿尔金造山带上地壳的平均Q值较高（约500），这可能由于结晶基底埋藏较浅，基岩出露，因此地震波在此处传播能量衰减较慢所致。

The invention provides an antennal separator which can be configured by less size and lower height than previously without damaging property of attenuation outside a channel and separating property between an emission terminal and a receiving terminal.

本发明提供了一种天线分离器，其能够以比以前更小的尺寸和更低的高度来构造而不会损害带外衰减特性及发射端子与接收端子之间的隔离特性。

Attenuation of 90% or more of the antiplatelet effect of aspirin has been defined as clinically significant by some investigators.

衰减为90 %或更多的抗血小板药物阿司匹林的影响已经被确定为国家临床意义一些调查。

Cross-dipole Acoustic Logging is the best measurement of the formation wave-slowness,amplitude and attenuation coefficient of the compressional,shear and Stoneley wave types that may occur in array acoustic waveform data.Further more,it has special superiority in the evaluation of shear-wave azimuthally anisotropy.

0引言在柴达木盆地交叉偶极子声波测井主要有以下方面的用途：纵横波、斯通利波的提取，地层各向异性分析和斯通利波渗透性分析，并且可以根据地层岩石动态力学参数的计算方法进行储层动态力学参数的计算和估计，指导工程施工。

In the modeling, an empirical attenuation relationship was utilized to calculate Arias intensity over this study area; and the variability of geotechnical parameters was taken into account to calculate coseismic displacement.

为此以一定的地区作为研究对象，提出了蒙特卡罗随机模拟和Newmark滑动体位移分析法在区域地震斜坡失稳概率分析中的应用。

Low-frequency covibration experiments of four kinds of fluid-saturated feldspar sandstones which have different viscosity coefficients respectively were conducted so as to know how fluid viscosity coefficient influences attenuation, modulus and velocity dispersion in fluid-saturated sandstone.

为了探讨孔隙流体的黏滞系数对饱和砂岩的衰减、模量和速度色散的影响，本文进行了四种不同黏滞系数的饱和长石砂岩的低频共振实验，结果发现在0.01～10Hz频带范围内，无论是衰减温度话还是衰减频率谱，都显示出衰减随黏滞系数的增大成良好的线性增长关系，黏滞系数越大楼量越大；同时还具有明显的模量与速度色激，而且随着黏滞系数的增大，模量与速度色权有增强的趋势。

Results For the first primary lesions,most of them were stage IIa, including 12 invasive ductal caicinoma, 5DCIS, 2 invasive lobular caicinoma, a invasive carcinoma with cribriform pattern and 1 case mixed-cell carcinoma. On FFDM, 5 had microcalcification,13 were mass, 1 showed focal high attenuation and 2 were not detected. For the second primary lesions, most of them were stage 0, including 7 invasive ductal carcinoma, 12 DCIS ,1 invasive lobular carcinoma, 1 mixed-cell carcinoma.

结果；第一原发癌以Ⅱa期为主，浸润性导管癌12例，导管原位癌5例，浸润性小叶癌2例，浸润性筛状癌1例，混合细胞癌1例；5例以微钙化为主要表现，13例肿块，局部密度曾浓1例，2例未见异常；第二原发性癌以0期为主，浸润性异常癌7例，导管原位癌12例，浸润性小叶癌1例，混合细胞癌1例；11例以微钙化为主要表现，肿块3例，结构不良4例，局部密度曾浓1例，2例未见异常。

Application to the Eopalaeozoic buried hill in the Z oilfield shows that the two types of azimuthal attributes, attenuation gradient and frequency at 85% energy ratio, are closely related to fracture characteristics of carbonate reservoir.

对Z区下古生界潜山碳酸岩储层进行的裂缝预测表明，由衰减梯度和85%能量比频率两种属性导出的裂缝发育密度具有很好的相关性，且与实际情况符合。

Based on the intensity attenuation model, we have proposed the Grid Searching of Trial Source Location method for estimating earthquake magnitudes and bounding epicentral regions, and the confidence value of contours are also calculated.

在衰减模型基础之上，发展了确定震中区域和震级的网格搜索试算方法，并给出了确定震中位置和震级的等值线置信值。

The motive of developing multi-parameters tomography combining velocity and attenuation is to improve explorational resolution to expect efficacious utilize of crosswell seismic data and fully exert the technological capability.

开展波速、衰减因子等多参量成像方法研究，以最大可能提高勘探分辨率为目标，以期更加有效地利用井间地震资料，充分发挥该技术的能动性。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。