getupsva
@getupsva
有効 (3年, 10か月前)ジャニラブポイント： 6
Grinding takes an abrasive — often attached to a grinding wheel — and uses its many grains to cut a workpiece. Variations on this process are useful for a wide variety of applications.
On its surface, grinding seems simple: a machine takes a rotating tool (usually a wheel) with abrasive grains and applies it to a wor […] 表示
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