No external reference or driver components are required for many applications.

对于大多数应用来说,无需外部基准电压源或驱动器件.

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Figure 1 Inserting DGN as external reference.

图1利用选单列插入DGN参考底图.

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In the process of modeling, the methods of External Reference , Instance, Texture are used.

建模过程中采用了实例化技术、外部引用技术 、 纹理映射技术等多种方法.

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