标签: Chinese standard
grama · 2026-06-15
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GB 5168-85 α-β Titanium Alloys — Examination of Structu […]
grama · 2026-05-14
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This is the English translation of the Chinese National […]
grama · 2026-05-14
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GB 2971-82 – Method of Fracture Test for Carbon a […]