划线定位：根据设计图纸中门窗的安装位置、尺寸和标高，依据门窗中线向两边量出门窗边线。
Line location: according to the installation location, size and elevation in the drawing out of doors and Windows, doors and Windows on both sides of the doors and Windows to the edge line.
我们发现这样一个有趣的错误，当我们在主机名中使用了下划线（_）时，WPAR 管理器将无法定位到一个托管的系统。
We found one interesting bug, when we had used an underscore (_) in the host-name, which kept the WPAR manager from being able to locate one of our managed systems.
工件划线后，仍有必要将其相对于切削运动定位，并在机加工开始前把它装夹到位。
After the workpiece has been marked out, it is still necessary to position it with respect to the machine movements, and to clamp it in that position before machining is started.
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