One meeting center even has magnetized pieces of metal whiteboard, cut in the shape of PERT chart symbols, that will stick to the walls and can even be moved around on the wall.
一个会议中心甚至有磁化的金属片白板、切的形状，网络图将坚持符号城墙环绕移动，甚至可以在墙上。
A process chart for quick casting based on this method was presented, and a metal part was produced.
本文给出了由此方法实现快速铸造的工艺方案，并进一步实现了金属零件的快速铸造。
The metal flow rule of extrusion forming is expounded by velocity vector chart.
并利用速度矢量图阐述了挤压成形时金属的流动规律。
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