选择视图，要记住，除了展示物体特征形状的视图 外，还应有许多必要的附加试图以完成形状的描述。

Select the view, remembering that, aside from the view showing the characteristic shape of the object, there should be as many additional views are necessary to complete the shape description.

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它描述了许多各种形状和大小的机器。

It describes a number of machines of all shapes and sizes.

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使用SVG可以描述线条、形状、位置及其之间的关系。

With SVG, you can describe the lines, shapes, and locations and relations between those elements.

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