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（）图常用来表示机件上某一结构在断面上的形状，例如轴上的键槽、孔的深度、肋板的厚度等。

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Broadcasting news in English has some particular , such as its style, its structure, the choice of words and the order of presentation, etc.

The standardized narrative procedure in news reporting is often called the ______ pyramid.

That is to say, the most important information is usually included in the news ______.

And a news lead, in a sense, is also a ______ form of a complete news story.