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- sound velocity field 声速场特性
- The velocity field in blown film die was simulated by FEM method. 用有限元法对吹膜机头内熔体流动的速度场进行了模拟。
- A new method for inverting sound velocity profile field with empirical orthogonal functions is given.It is shown from the results that SVP computed by the method has high precision. 摘要提出了根据实测声速剖面,利用经验正交函数建立了声速剖面场的数学模型,得到了任意点位的声速剖面对边缘波束数据进行声线折射改正的方法。
- 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。
- It was indicated that the real accuracy of velocity field by GPS or VLBI reached 1 mm/a,and SLR 2 mm/a. SLR实测台站地心速度已经达到2 mm/a的精度。
- 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。
- Rebuilding near-surface velocity field is very important for calculating statics. 摘要近地表速度场的重建是获得准确静校正量的关键。
- 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]
- Doppler laser velocimeter is employed to measure the velocity field around hanged grid &deflector plate. 用多普勒激光测速系统对悬栅和悬板栅附近流场进行了测试,分析了悬栅、悬板栅的消能效果。
- 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;
- Yu, S.B., H.Y.Chen, and L.C.Kuo, 1997, Velocity field of GPS stations in Taiwan area: Tectonophysics, 274, 41-59. 蒲新杰,2003,利用线形地震网探讨台湾南部主要构造:国立中央大学地球物理研究所硕士论文,122页。
- 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。
- Velocity field and variation of wall thickness are studied theoretically during tube dieless upsetting. 对管材无模扩径变形速度场及壁厚变化规律进行了理论及实验研究。
- In this paper, velocity field and variation of wall thickness are studiedtheoretically during tube dieless upsetting. 对管材无模镦粗变形速度场及壁厚变化规律进行了理论研究。
- The Zeroth Order Solution of the Velocity Field around Micro Comb Structures with Lateral Oscillation. 后设资料;授权与引用资讯;连结到原始资料网站 ...
- 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。
- Uses the level set method with reinitialization to compute the movement of fronts under a given velocity field. (译):用Level Set方法计算与reinitialization流动的战线根据某一速度场。
- 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。
- 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。