...平底孔;当量直径 [gap=695] words: ultrasonic flaw detection;defect grade;sesitivity calibration;DAC curve;flat-bottom hole;equivalent diameter ...
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flat bottom hole 平底孔
Validity and feasibility of the finite difference time domain method is demonstrated by the echo-wave signal of a flat bottom hole block.
通过与平底孔试块实际缺陷回波信号的对比，验证了脉冲超声波有限差分法模拟计算的有效性和正确性。
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