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二次电流在管子内部会产生磁场。
The secondary current sets up a magnetic field inside the tube .
youdao
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二次电流在管子内部会产生磁场。
The secondary current sets up a magnetic field inside the tube.
youdao
-
二次电流在管子内部会产生磁场。
The secondary current sets up a magnetic field inside the tube.
youdao