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cjt1890
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樓主  發(fā)表于: 2013-12-06 15:37
什么是真空電機，主要功能是什么
雪峰
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1樓  發(fā)表于: 2013-12-07 19:01
沒(méi)聽(tīng)說(shuō)過(guò)真空電機，只知有真空泵之類(lèi)的。不然發(fā)個(gè)圖片認識下。

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