理想要素就是具有几何学意义的要素。它们是完全准确的,是无任何误差的。
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被测要素采用最大实体要求的零几何公差时,被测要素必须遵守最小实体边界。
A. 对
B. 错
Activity 2Fill in the blanks with the proper forms of words given in the brackets.Aweddingisajoyful_________(celebrate)oflove.
Thetheorybearsno_________(relate)toreality.
Itis_________(tradition)inEnglandtoeatturkeyonChristmasDay.