The test results indicated that the strength of concrete could be estimated by supersonic velocity values.

结果表明由超声波测试得到的声速值可以方便地估算出混凝土的强度。

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Then, the base bleed method is introduced on a general supersonic missile to decrease the base drag of the inlet cowl for the first time and is validated by wind tunnel test.

本文首次将底部排气法应用于导弹上，结合一种具有常规气动布局的超声速导弹进行了底部排气方案设计，采用一种“底窝器”来提高进气道整流罩的底部压强，并进行了风洞实验验证。

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This is Marine Corps Maj. Joseph Bachmann, a developmental test pilot for the Lockheed Martin-built supersonic strike fighter, in front of the F-35 AA-1 after a flight in March 2009.

这是海军陆战队少将约瑟夫巴赫曼，为洛克希德马丁公司制造的超音速战斗机研制试验飞行员罢工，在前面的F - 35的AA - 1后，2009年3月飞行。

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The X-43A, or "Hyper-X" was built specifically to test scramjets, or supersonic ramjets, which burn fuel in air travelling at supersonic speeds.

BBC: Mach 10 scramjet prepares for launch

The U.S. Air Force is currently test-flying an optionally piloted supersonic drone over the Gulf of Mexico based on a modified F-16 fighter jet.

FORBES: Pilot-Optional Flight Is Closer Than You Think