Eddy current testing for measuring rebound clearance of aluminum skin caused by bending is described including its basic principles, characteristics and the design of measuring circuit and software.

介绍应用涡流检测技术测量铝蒙皮拉弯成型回弹量的基本原理与特点，以及应用系统机实现测量的电路设计与软件编制。

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The force state of perforation tube string for testing of oil is analyzed with the finite clearance element method, and the field applied examples prove its reliability and veracity.

用此方法对试油测试射孔管柱的受力状态进行了分析，并通过现场应用实例证明了此方法的可靠性和准确性。

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This paper introduces a technique for the elimination of clearance between the explosive charge and the bottom of shell, besides a testing method adopted for the process is given.

介绍消除弹丸药柱与弹底间隙的工艺方法及工艺过程中使用的间隙测试方法；

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Federal employees with secret clearance know that lie detector testing comes with the job.

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