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dong bei da qu ping mian ping jing bi dui
Author(s): 
Pages: 41
Year: Issue:  18
Journal: Enterprise Standardization

Abstract:  JJG28-2000<平晶>国家检定规程实施后,东北地区大部分单位未参加规程宣贯会,对规程的理解存在差异,特别是对标准平晶在指定区域内平面度的计算方法存在差异.
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