论文部分内容阅读
1.作为标定仪器的基准或在评定检验结果时作比较用的试样称为: (1)零平衡器 (2)移相器 (3)参考标准试样 (4)高通滤波器 2.在涡流检测中,下列哪项是噪声的来源? (1)仪器的电子电路 (2)试样中不需检出的变化 (3)电气干扰 (4)上述的三项 3.有用信号的响应或振幅与对检验无用的响应或信号的振幅之比称为:
1. As a benchmark for calibration equipment or in the assessment of test results for comparison with the sample as follows: (1) zero balancer (2) phase shifter (3) reference standard sample (4) high-pass filter 2 Which of the following is the source of noise in eddy current testing? (1) Electronic circuitry of the instrument (2) Changes that need not be detected in the sample (3) Electrical interference (4) Three of the above 3. Response of useful signals or The ratio of the amplitude to the amplitude of the signal that is not useful for testing or the signal is called: