带纤毛弹簧圈置入法;活塞环双端面磨床的钢带加工
Sping eoil ; Machining of Metal Band of Double Ends Grinding Machine for Piston Ring
活塞环立轴双端面磨床
Vertical - spindle double ended grinding mahcine for piston ring
活塞环内外圆无心磨床
Internal and cylindrical centerless grinder for pistone ring