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sonic velocity field
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  相似匹配句对
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短句来源
     On Errors of Calculating Sonic Slowness and Velocity.
     探讨声波时差的计算误差和计算速度
短句来源
     APPLICATION OF SONIC LOGGING IN AVERAGE VELOCITY FIELD
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     APPLICATION OF SONIC VELOCITY AND ELECTRODE POTENTIAL METHODS IN THE ELECTROLOGGING OF ANTHRACITE COALFIELD
     声速法和电极电位法在无烟煤测井中的应用
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     and ④ velocity correction.
     ④速度校正。
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The purpose of present paper is to study the spheric-symmetrical motion of a piston at a constant velocity in the strong field of gravitation. The gasdynamic equations have been solved numerically according to the characteristic method for three kinds of gravitational strength. Such kind of solution which satisfies the conditions at shock and boundary of rarefaction region is obtained. The trajectory of piston and shock, the propagating velocity of shock, the flow and sonic velocity fields...

The purpose of present paper is to study the spheric-symmetrical motion of a piston at a constant velocity in the strong field of gravitation. The gasdynamic equations have been solved numerically according to the characteristic method for three kinds of gravitational strength. Such kind of solution which satisfies the conditions at shock and boundary of rarefaction region is obtained. The trajectory of piston and shock, the propagating velocity of shock, the flow and sonic velocity fields in the disturbed region by moving piston and the sonic velocity distribution on the piston are described. The influence of strong gravity on spheric-symmetrical piston is discussed in present paper.

本文研究在强引力场中活塞的球对称匀速运动问题,对三种不同强度的引力场,用特征线法数值求解流体力学方程组,得出符合激波间断条件及稀疏波边界条件的解。文中详细地描述了活塞的运动图象、激波传播速度、活塞面上声速分布以及活塞扰动区流场,分析讨论了引力场对球对称活塞运动的影响。

In these years the wide application of sonic detecting technique to rock engineering and the development of the caculating techniques processing sonic transmision information by using computer to develop computerized tomography technique (CT) to solve sonic velocity field have become the newest subject of the study of rock sonic detecting technique.

本文提供长科院在声波穿透层析成象反演波速场研究方面取得的一些成果。通过清江隔河岩、宣恩龙洞及新安江电站三个工程应用实例,介绍了层析成象技术的方法应用。对所采用的反演算法优点及局限进行了讨论,对今后深入开展层析成象技术的研究前景作出了展望。

 
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