piston ring superfinishing machine的意思|示意

活塞环外圆超精加工机 ... 直齿锥齿轮拉齿机straight bevel gear broaching machine 活塞环外圆超精加工机piston ring superfinishing machine 珩磨机honing machine ...

珩磨机 ... straight bevel gear broaching machine活塞环外圆超粗加工机 piston ring superfinishing machine珩磨机 honing machine气门座研磨机 ...