And the difficulties for these two marking methods being used for on-line marking are discussed.
讨论了目前两种打标方式用于在线打标存在的困难和问题。
参考来源 - 振镜式激光打标机的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
The fanned air is then discharged from the front side of the base, blowing off saw dust on a cutting object so as to prevent dust from accumulating on a marking line on the cutting object.
扇动空气从底板的前端向前吹出，吹掉切割对象上的锯屑，从 而防止锯屑聚集在切割对象上的标记线上。
Stitches are made a fraction of an inch inside the seam line in the seam allowance to prevent marking the right side of the garment and to allow machine stitching on the original seam line.
针迹是在缝份的接缝线里挑起一小部分纱线，目的是防止在服装的正面留下记号，机缝线迹可以留在最初的接缝线上。
Manual marking with billet is influenced by high temperature, so the marking characters are easy to be written incorrectly and not clear. It is difficult to be done on line.
人工方式标识方坯受到高温辐射的限制，容易造成标识差错及标识不清楚，难以实现在线标识。
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