magnet plunger
常见例句
- Under the action of variation magnetic field, the permanent magnet moving-coil drives the plunger pump to move up and down and lift oil up to ground.
通過動力電纜給井下直線電機供電後産生交變磁場，永磁躰動子在交變磁場作用下帶動泵柱塞上下往複運動，從而達到擧陞抽油的目的。
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