羚羊下巴上面平整的切痕，显示它的舌头是被非常锋利的片状器具切割的。
The flat cut on the antelope's chin shows that its tongue was cut by a very sharp flake.
本发明提供一种玻璃板的切痕线付与装置。
The invention provides a cutting line on glass sheet providing apparatus.
该应用程序允许用户手动绘制切痕或产生剪标表，根据需要。
The application allows users to manually draw cut marks or generate a cut mark table according to needs.
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