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关注:1
2013-05-23 12:21
求翻译:to make the two bridge arm alternately turned on or off, thereby providing forward or reverse excitation current to the electric excitation winding.是什么意思?![]() ![]() to make the two bridge arm alternately turned on or off, thereby providing forward or reverse excitation current to the electric excitation winding.
问题补充: |
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