短語詞組短語Multi -functional protective relay 多功能保護(hù)繼電器bearing over -heat protective relay 軸承過熱保護(hù)繼電器displtating over -heat protective relay 軸承過熱維持繼電器supporting over -heover protective relay 軸承過熱維護(hù)繼電器showing over -heduring protective relay 軸承過熱廻護(hù)繼電器out -of-step protective relay 失步防護(hù)電驛winding g over -heat protective relay 繞組過熱保護(hù)繼電器electronic over -load protective relay 電子式過載保護(hù)繼電器winding over -heat protective relay 線圈過熱保護(hù)繼電器 返回 protective relay