经过加工，一对夫妇的通行证上一块石头或一块细砂纸在平面上删除加工商标，并允许部分顺利过渡到由单位双方的半径。
After machining, a couple of passes on a stone or piece of fine sandpaper on a flat surface remove the machining marks and allow the part to transition smoothly from flat sides into the radius.
经过加工，一对夫妇的通行证上一块石头或一块细砂纸在平面上删除加工商标，并允许部分顺利过渡到由单位双方的半径。
After machining, a couple of passes on a stone or piece of fine sandpaper on a flat surface remove the machining marks and allow the part to transition smoothly from flat sides into the radius.
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