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本标准规定了厚度为5~300mm铸钢件的X射线、γ射线照相方法及射线底片等级分类方法。 1 射线照相方法 1.1 射线照相方法的要求
This standard specifies the thickness of 5 ~ 300mm castings of X-ray, gamma ray photography method and ray film classification methods. 1 radiographic method 1.1 radiographic method requirements