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- It treats the weighted average sound velocity in different mediums as the average sound velocity in the structure,thus the natural frequency of the structure is calculated. 以声波在各层介质中传播时波速的加权平均值作为构筑物的平均声波波速，计算出结构自振频率。
- Average sound intensity in Shallow-water with a negative sound velocity gradient and a loose sand (muddy) sediment sea-bottom 具有松散沙(泥)质海底时负声速梯度浅海中的平均声强
- average sound velocity 平均声速
- As an example, the distribution of the detonation pressure, density, particle and sound velocity along the detonation profile are given for TNT. 以tnt为例进行了计算,给出了其爆轰波内压力、度、速和声速等参数的分布。
- Finally, at long ranges, the blast wave becomes essentially a sound wave and its velocity approaches ambient sound velocity. 最后，在很远的距离处，爆震波基本上就变成一种声波，其速度已接近周围的声速。
- William J.Capell,Sr.Determination of Sound Velocity Profile Errors Using Multibeam Data[C].Proceeding of Oceans 1999,1 144-1 148. 冯士笮;李风崎;李少菁.;海洋科学导论(第一版)[M]
- In the stress-atrain course of being controlled, thc sound velocity of each type seafloor sediment is variance as the developing of the strain course. 各类海底沉积物在受控应力-应变过程中，声速随应变过程发展而变化；
- This paper introduced a new Lamb wave sensor based on the analysis of nowaday methods for measuring sound velocity in liquid. 在分析现有液体声速测量方法的基础上,提出了一种新的兰姆波传感器。
- Have set up the relation equation of porosity pervious concrete and its average sound absorption coefficient . This equation can evaluate the sound-absorbing ability of different porosity pervious concrete pavement. 经过对不同孔隙率透水性混凝土吸声系数的研究,建立了透水性混凝土孔隙率与平均吸声系数的关系方程,该方程可用于评估透水性混凝土铺装吸声降噪能力。
- The improved experiment device of interference of sound wave can feel the interference countervail and strengthening of sound in ordinary lab, and measure the sound velocity. 摘要本文给出了改进声波干涉实验装置的具体方案，该改进装置可在普通实验室内感受声音的干涉相消和干涉加强现象，并能测定声速和频率。
- After partition the pipe into calculation cells, the sound velocity, fuel density, fuel pressure and flowing velocity at every calculation crunode in different time are gained. 在对油管合理地划分计算单元后,可求解得到油管各个结点在不同时刻的燃油音速、密度、压力和流速等特征参数值。
- It relies on short-term average sound up, last Thursday has always run the Changyang entity, is still a strong feature of obvious, is expected to continue to move up the afternoon. 该股依托短期均线稳健上行，近日始终处于上周四的长阳实体中运行，强势特征依然明显，后市有望继续走高。
- The shortening of the medullar rays naturally decreases the sound velocity a lot and, consequently, reduces the vibration capabilities of the instrument. 材料虽然没拿，但因此认识他太太，后来为材料的事也联系过很多次，只是材料总是不合心意，生意没成但人还是认识了。
- Results Compared with sound velocity and attenuation, the backscatter coefficient could reflect the structural change of biological tissue.The high frequency ul... 结果高频背向散射系数较声速、声衰减更能反映组织结构的变化,高频超声图像具有高的分辨率。
- The orientation structure of the polyacrylonitrile precursors was quantitatively studied by the sound velocity method and the wide angle X-ray diffraction. 采用声速法及X射线衍射法对不同拉伸倍数聚丙烯腈原丝的取向结构进行研究。
- This paper analyzes the reason of systematic error forming, the sound velocity error and attitude error are thought to be two main contribution factors. 摘要在多波束数据处理中，系统误差一般很少被顾及，部分文献采用两步滤波法削弱了系统误差的影响，但所建模型的可靠性较差。
- In the experiment of measuring sound velocity, the sound velocity is generally measured by producing standing waves between a couple of ultrasonic transducer. 摘要在物理实验中常利用在1对换能器之间形成的驻波测量声速。
- Atmospheric environment model, enter the height value, can be provided for a high degree of atmospheric pressure, density, sound velocity, and other parameter values! 大气环境模型，输入高度值，就可以得到规定高度的大气压强、密度、声速、等各种参数值！
- By comparison of water amount before and after the grouting and examining the increased range of sound velocity,it finally comes up with a quantitative crite... 最后提出了用超声波检测注浆质量和效果的定量标准;这对于推进注浆技术的发展具有十分重要的意义.
- The average age of the boys in this class is fifteen. 本班男生的平均年龄是十五岁。
