ultrasonic attenuation的例句大全

the result showed that there is a turn point on the ultrasonic attenuation curve.

试验结果表明,豆乳在凝固超声衰减曲线上有一明显转折点即凝固初始点.

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Research of Measuring the Ultrasonic Attenuation Coefficients and Texture Parameters of the Diseased Liver

肝脏病变的声衰减系数与纹理参数的测定

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Pulse-echo based ultrasonic attenuation model for porosity test of carbon fiber composites

碳纤维复合材料孔隙率的脉冲反射法超声衰减测试模型

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Ultrasonic attenuation in normal and abnormal human tissues

超声在人的正常与病变组织中的衰减

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Ultrasonic attenuation capacity of cellular Al alloy foam were studied.

研究了闭孔泡沫铝合金孔结构参数对其超声衰减性能的影响.

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Because of ultrasonic attenuation in organism is proportional to frequency, 2 MHz ultrasonic distance and receiving sensitivity.

超声波在生物体中的衰减与频率成正比, 使用2MHz超声换能器由于衰减大致使穿透深度小、接收灵敏度低、仪器综合灵敏度难以提高.

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Objective: To study the diagnostic role of broadband ultrasonic attenuation ( BUA) in measurement of bone mineral density. Determination of Fatty Liver Ultrasonic Attenuation

目的：探讨跟骨宽带超声衰减诊断骨质疏松的临床价值。脂肪肝超声衰减系数测定

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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。

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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。

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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。

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Solidification degree of PETN composite explosive would affect ultrasonic attenuation.

介绍泰安混合炸药固化程度对超声波衰减的影响.

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The theory of ultrasonic attenuation in superionic glasses

超离子玻璃中的超声吸收理论

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The results indicate that the temperature dependence of ultrasonic attenuation in liquid hydrogen is mainly determined by volume viscosity effect.

实验结果表明，液氢的超声衰减的温度依赖特性主要取决于体积粘滞效应。

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Vivo Determination of Placenta Ultrasonic Attenuation Coefficients in Normal Pregnant Women

38例正常孕妇的胎盘超声衰减系数

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Ultrasonic Velocity and Attenuation of Tightening Screw in Nuclear Power Plant

核电紧固螺栓的超声速度和衰减

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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。

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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。

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The basic acoustic parameters of material include the velocity, attenuation coefficient and acoustic nonlinear parameter B/ A, etc. They all play important roles in the non-destructive test, ultrasonic tissue-mimicking materials properties testing and medical imaging.

材料的基本声学参数包括声速、声衰减系数、非线性声参量B/A等，它们在无损检测中的缺陷定位，仿组织材料的超声特性检测，以及医学成像中都有重要意义。

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Ultrasonic backscattered grain echoes are random signals which bear information related to the attenuation properties of the materials.

材料中颗粒（或微结构的不连续）造成的超声背散射信号是一种随机信号，这种信号的衰减特性与材料中微结构状态有关。

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This method overcomes the difficult and unrealizable experiment conditions that are used to measure the absolute attenuation coefficient and impels the technique of ultrasonic characterization to be more closed to the engineering requirements and more practical.

该方法克服了绝对衰减系数测定法对实验条件要求极为苛刻、难以实现的不足，使得超声表征技术更接近工程条件、更具实用价值。

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