Grado utilizes a special processing method to increase the material's porosity.
歌德采用了特殊的处理方法来提高材料的孔隙度。
EDM (Electro Discharge Machining) is one kind of special processing method, and it is widely used in mechanical area.
电火花加工属于一种特殊的加工方式，在机械加工领域中逐渐得到了广泛的应用。
EDM (Electro Discharge Machining) is one kind of special processing method, and it is widely used in mechanical area.
电火花加工属于一种特殊的加工方式，在机械加工领域中逐渐得到了广泛的应用。
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