07资源列表
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[国外标准] ASTM A307-07 Standard Specification for Carbon Steel Bolts and Studs, 60 000 PSI Tensile Strength
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[国外标准] ASTM A297/A297M-07 Standard Specification for Steel Castings, Iron-Chromium and Iron-Chromium-Nickel
[国外标准] ASTM A307-07 Standard Specification for Carbon Steel Bolts and Studs, 60 000 PSI Tensile Strength
[国外标准] ASTM A297/A297M-07 Standard Specification for Steel Castings, Iron-Chromium and Iron-Chromium-Nickel