attenuation的例句大全

Evaluating the density of cancellous bone using quantitative ultrasound, it's a theory developed for more than ten years in the field of Ultrasonic Diagnosis Technic, broadband ultrasound attenuation ( BUA) and speed of sound ( SOS) are two pivotal parameters of the QUS diagnosis.

在超声诊断技术领域，定量超声骨密度检测理论已发展了十余年，宽带超声衰减（BUA）和超声声速（SOS）是用定量超声（QUS）进行骨质疏松症诊断的最重要的两项参数。

Results The values of calcaneal broadband ultrasound attenuation ( BUA), speed of sound ( SOS) and stiffness ( STI) in altitude group were significantly lower than those in plain group at any age ( P < 0.01).

结果进驻高原地区官兵跟骨超声振幅衰减（BUA）、超声声速（SOS）和刚度（STI）各年龄段均较返回平原组显著降低（P<0.01）。

The broadband ultrasonic attenuation ( BUA) of proximal femurs, fat-free dry weight and ash weight of the femur of the rat model were measured by quantitative ultrasound.

同时用定量超声检测大鼠股骨近端超声振幅衰减（BUA）及大鼠股骨骨干重和骨灰重。

Methods An ARM embedded system was used to measure the speed of ultrasound, the broadband ultrasound attenuation ( BUA) and the stiffness.

方法：设计采用ARM嵌入式系统，通过超声技术测量并计算足跟骨处的超声速度、宽带超声衰减值和硬度系数。

Conclusion Using the technique of ultrasound diagnosis ( USD) to measure the bone density, BUA ( Broadband Ultrasonic Attenuation) is an im-portant statistic data, SOS ( Speed of Sound) is of no characteristic importance.

结论用超声诊断技术（USD）测骨密度值，声量减弱（BUA）值是具有统计意义的重要参考值，声速（KE）值不具备此特点。

Objective : To establish and develop a new technology of human ultrasonic tissue attenuation imaging ( UAI ).

目的: 建立和发展一种新的人体超声组织衰减 成像 方法.

Attenuation of S-waves in the lithosphere of the Sea of Crete according to OBS observations

根据海底地震仪观测资料确定克里特海岩石层S波的衰减

For the same line with obstructor at the user's terminal the attenuation of carrier signal is weak, when transferring distance is 30km, the applicable frequency range is 0.1~ 200kHz.

当用户处有阻波器时，载波信号衰减很小，在30km范围内可用频段为0.1～200kHz。

Guaranteed Cost Control with H ∞ Disturbance Attenuation for Neutral Systems

具有H∞干扰抑制的中立型系统保成本控制

Decreased lung attenuation includes honeycombing, lung cyst.

肺密度降低包括蜂窝状影、肺囊状影。

Significant linear correlations were found between transparence, PAR attenuation coefficient, euphotic depth and total suspended solid, especially inorganic suspended solid, while chlorophyll a was the most nonsignificant light attenuator.

透明度、PAR衰减系数、真光层深度与悬浮物浓度存在显著性线性相关，并且与悬浮物中无机颗粒物相关性最好，而与叶绿素a、脱镁叶绿素及溶解性有机碳相关性很低。

The beneficial effect of vitamin E in reducing CaOx accumulation is due to attenuation of tubular cell death and enhancement of the defensive roles of OPN and THP.

维生素E减少草酸钙累积的作用归因于肾小管细胞死亡的消减和OPN，THP防御作用的增强。

Natural Desorption Rate and Attenuation Coefficient of Coal Seam Gas and its Significance

煤层瓦斯初始自然解吸速率和衰减系数及其意义

Build-up and attenuation of bete dose within a porcelain slice

瓷片中β剂量的积累和衰减研究

Methods Vertex plus double detector SPECT and 153 Gd nonuniform attenuation correction system made by ADAC were used.

方法应用ADACVertexPlus双探头SPECT仪及153Gd非均匀衰减校正系统。

The test data show that the complex attenuation parameter β vLv has a good linear relation with the relative velocity V/ C0 and the wave length keeps constant along the flume.

经水槽试验，求得衰减系数系βv，进而发现，复合因素βvLv与相对流速V/C0之间有良好的线性关系。另外，试验结果表明逆流中波长沿程不变。

In this paper, a measurement system of UWS electromagnetic pulse radiating field is developed, which consisted of TEM horn, coaxial transmitting line, wide band oscillograph and data processing software for the compensation of signal attenuation and aberration.

介绍了一套自行研制的高功率超宽谱电磁脉冲辐射场测量系统，该系统主要由TEM喇叭接收天线、同轴传输线、宽带示波器及微型计算机组成。

In addition, TWM analysis results also proved that acoustic particle size based on the principle of ultrasonic attenuation could accurately describe the particle size distribution of nanometer calcium carbonate suspension.

另外，样品透射电镜分析结果表明，基于声衰减原理的声波粒度仪较好地反映了纳米级碳酸钙悬浊液中颗粒粒度分布情况。

Objective: To establish and develop a new technology of human ultrasonic tissue attenuation imaging ( UAI).

目的：建立和发展一种新的人体超声组织衰减成像方法。

Whether Chi-Chi earthquake or Northridge earthquake, the peak attenuation ( PGV and Vp) are generally faster, particularly in the NS direction.

无论是集集地震还是北岭地震，峰值衰减（PGV和Vp）总体都是较快的，尤其是在平行断层方向。