N a diamond-tipped engraving tool 金刚石刻刀
The diamond point of will that polestars.
金刚石般的意志,如北极星一般指引着。
The four arrows of the diamond point toward the four sides of the editing pane.
菱形的四个箭头指向编辑窗格的四个边。
The errors of grinding wheel dressed by diamond point cause the race to produce non-circular arc tooth profile errors.
金刚石笔修整砂轮误差使滚道在磨削时产生非圆牙形误差。
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