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ASTM E2023-19 pdf free download,Standard Practice for Fabrication of Neutron Radiographic Sensitivity Indicators. 中子射线敏感性指示器的制作标准 Scope 1.1 ASTM E2023-...
ASTM A193/A193M-23 pdf download,Standard Specification for Alloy-Steel and Stainless Steel Bolting for High Temperature or High Pressure Service and Other Special Purpose Applicatio...
