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1·The basic principle of eddy current testing is introduced and the coil impedance responses due to the variations of the probe coil lift-off are analyzed and studied.

简要介绍了涡流检测的基本原理和涡流探头的特性； 分析和研究了涡流检测探头提离变化对阻抗的影响；

2·The dotted line connecting the tops of the two capacitors represents the low coil impedance to ac signals.

两个电容顶部的虚线表示切换交流信号时的线圈阻抗。

3·The emitting coil and capacitance are connected in parallel and form a resonant amplitude-modulation circuit, which converts the impedance into output voltage.

利用发射线圈与电容并联的谐振调幅电路，将线圈阻抗变化转换成电压的输出。

4·Impedance analytical method is presented, through which we analyze some factors that alter testing coil impedance's value.

阐述了阻抗分析法，并用其分析了影响检测线圈阻抗变化的几个因素。

5·When the phased array coil designed, such problems have to be taken into account as resonant frequency, impedance match, mutual impedance and et al.

设计相阵控线圈要考虑谐振频率，阻抗匹配，互阻抗等问题。

6·Generator neutral ground methods include non-ground, low impedance ground, high impedance ground and arc-suppression coil ground.

发电机中性点运行方式有中性点不接地、小阻抗接地、高阻抗接地、消弧线圈接地。

7·It comes mostly from the finite coil-to-contact impedance.

通常是由于有限的“线圈-触点”阻抗引起的。

8·Temperature drift of gap sensor mainly results from sensor coil impedance drift.

间隙传感器线圈电阻的温度漂移是导致传感器输出漂移的主要因素。

9·The impedance of single coil is calculated using analytic method, and the result is compared with that calculated by 2d FEM model.

利用解析方法计算了空芯线圈的阻抗，然后通过二维有限元模型进行了阻抗求解，对比结果有较好的一致性。