For it, the 47 millihenry inductor is a standard value unit.
2
理论上讲，输电线路单位长度的电阻、电感、电容以及输电线路的实际长度等参数都是无法精确获得的。
Theoretically, the resistance, inductance and capacitance in per unit length, and the effective length of transmission line cannot be obtained accurately.
3
该发明涉及的电感式传感器的单位有一个或若干个线圈，它们在印刷电路板安装在一个平面的方式。
The invention relates to an inductive sensor unit having one or several coils, which are mounted on a printed circuit board in a planar manner.
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