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扩径率
met.
expand ratio
(【技】表示管坯直径与毛坯直径之间的关系。毛管直径的增长率根据扩径率数值的不同分为:扩径穿孔、等径穿孔、减径穿孔。生产厚壁管时,扩径率为负值;生产薄壁管时,扩径率为正值。在生产中最好使用等径穿孔。)
扩径率
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2 phrases
in 2 subjects
Aviation
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Technology
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