对于它来说，47毫安电感器是标准值单位。
For it, the 47 millihenry inductor is a standard value unit.
把电流传给电感器，就会产生磁通量。
Pass a current through an inductor, and you create a magnetic flux.
测量200h的电感器时不稳定情况的示波器图形如图3 - 21所示。
An oscilloscope picture of an unstable measurement of a 200h inductor is shown in Figure 3-21.
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