three-roll piercing mill

... three-roll grinder 三辊研磨机 three-roll piercing mill 三辊式穿孔机 three-roll plate bending machine 三辊弯板机 ...

在线英语词典... ... 三辊机座： three high rolling stand 三辊穿孔机： Three-roll piercing mill 三辊穿孔： three-high piercing ...