The province boundaries are marked in with a fine mapping pen.
是用很细的绘图笔加画在地图上的。
The county boundaries have been marked in with a fine mapping pen.
县界用细绘图笔加画在地图上了。
A kind of implicit mapping mechanism was proposed according to the characteristics of pen-based three-dimensional modeling technology.
针对笔式三维建模技术的交互特征，提出一种隐式映射机制。
A kind of implicit mapping mechanism was proposed according to the characteristics of pen-based three-dimensional modeling technology.
针对笔式三维建模技术的交互特征，提出一种隐式映射机制。
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