| 单词 | step-down transformer |
| 例句 | A step-up transformer is one that increases voltage, whereas a step-down transformer decreases voltage. College Physics for AP Courses 2015-08-12T00:00:00Z When the current reaches those places where it is to be used a low voltage is again obtained by the step-down transformer. The Niagara River 2011-02-08T03:00:09.703Z From the clutter of radar gear he pulled a screwdriver and a massive little step-down transformer down on its handle. Breaking Point |
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