The horizontal axis of this chart is a timeline and vertical areas in the timeline represent releases and each card posted to the areas represents one feature that will be implemented in the release.
表的横轴代表时间线，线上的竖直区域代表发布，在区域中的卡片各自代表一项该次发布中要实现的特性。
The open four-axis CNC system based on PC and motion control card can accomplish the cutting of various-angle welding plate.
并以基于PC和运动控制卡的开放式四轴数控系统实现支管端头的变角度焊接坡口面切割。
The article exploits a special NC system based on DOS, choosing PCL-839 3-axis stepping motor control card, and analyzes the expansibility of the card.
文章采用PCL-839三轴步进电机控制卡开发了一套基于DOS的专用数控系统，并对该控制卡功能的扩展进行了分析。
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