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    • [注意]量具的分类与特点

    时间:2011-09-22 08:16 作者:跃达量具 点击:次
    量具按其用途可分为三大类： 1、标准量具。指用作测量或检定标准的量具。如量块、多面棱体、表面粗糙度比较样块等。 2、通用量具。一般指由量具厂统一制造的通用性量具。如直尺
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