Product Code:SAE J418 Title:Grain Size Determination of Steels Issuing Committee:Metals Test Procedures Committee Scope: This classification for grain size comprises three sets of comparison charts to be used for determining grain size. These charts are presented in three categories as follows: Plate I--Untwinned grains (flat etch) Plate II--Twinned grains (flat etch) Plate IV--Austenite grains in steel (McQuaid-Ehn test or other test)
基本信息
标准名称：
食品安全国家标准 食品微生物学检验 总则
英文名称：
National food safety standard Food microbiological examination:General guidelines