hob relieving grinding machine

例句：

1. 1. This hob relieving grinding machineis very efficient in cutting metal.
   这台磨削机在切割金属方面非常高效。
2. 2. The engineer used this hob relieving grinding machine to smooth the surface ofa large piece of metal.
   工程师使用这台磨削机来平滑一块大金属的表面。
3. 3. The hob relieving grindingmachine was used to prepare the material forthe next step in the manufacturing process.
   这台磨削机被用来准备材料，以便在制造过程中进行下一步操作。