The pressure wave penetration and reflection properitics at a valve, which is located in a conduit, are discussed, And the Penetration and reflection coefficients are derived.
本文讨论了管道流体瞬变过程中压力波在管道中阀门处的穿透和反射情况，导出了压力波在阀门处的穿透和射反系数。
This paper introduces the theory calculation of shear wave reflection for block corner. And it derives the echo acoustic pressure theory calculation formula for block corner and its shape defect.
阐述了横波在端角反射中的理论方法计算，并推导端角及端角形缺陷的回波声压理论计算公式。
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