加大活塞环的英文

• oversize piston ring

• 活塞环:    packing ring; piston ring; p ...
• 加大活塞:    oversize piston
• 主阀大活塞环:    large main valve piston ring
• 主阀大活塞:    large main valve piston
• 活塞环:    bule; piston curl; piston packing ring; piston ring tongs; piston rings; piston segments; pistonrings; rings (piston )