记录和标绘的罗盘读数最好都是真正的方位。
It is best to record and plot all compass readings as true bearings.
因此，开发过程必然涉及到矢量符号设计和标绘的问题。
Therefore it is inevitable to lead to the problem of designing and marking vector symbols.
已有的工作流参考模型为协同标绘的工作流建模提供了参考。
The current workflow models provide effective references for workflow modeling with collaborative plotting.
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