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钢的共晶碳化物不均匀度评定法
Eutectic carbide of steel-Micrographic method using standard diagrams
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钢材塔形发纹酸浸检验方法
Steel products--Method for etch test of tower sample
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奥氏体不锈钢中α--相面积含量金相测定法
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钢中石墨碳显微评定方法
Steel.Determination of area content of graphite-micrographic method using diagrams
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钢的显微组织检验方法
Steel.Determination of microstrucyure
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金属显微组织检验方法
Metal--Inspection method of microstrcture
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铝合金铸件Χ射线照相检验 针孔(圆形)分级
Standard radiographs for inspection grading of gas porosity(round) in aluminum alloy casting
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