GB/T 13299-2022钢的游离渗碳体、珠光体和魏氏组织的评定方法国家标准
英文:Determination of free cementite, pearlite and Widmanstaten structure in steel GB/T 13299-2022介绍: 国家标准《钢的游离渗碳体、珠光体和魏氏组...
英文:Determination of free cementite, pearlite and Widmanstaten structure in steel GB/T 13299-2022介绍: 国家标准《钢的游离渗碳体、珠光体和魏氏组...