frequency conversion material

• 变频材料

frequency conversion material的用法和样例：

例句

1. On the basis of the documents published home and broad,the synthesization and corona-resistance mechanism of the kind of material are overviewed.
   采用耐电晕材料作为变频电机的漆包线绝缘是延长变频电机使用寿命的重要途径之一。