Mandarin:
冷加工金属

Explanation in English Language (EN):
A metal that has been strengthened through plastic deformation at temperatures below its recrystallization point. This process improves strength but may reduce ductility.

Explanation in Mandarin (ZH):
通过在再结晶温度以下进行塑性变形强化的金属。这种处理提高了强度，但可能降低延展性。

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International Phonetic Alphabet (IPA)
- Definition: A standardized system of symbols used to represent the sounds of spoken language.
- Purpose: Helps linguists, language learners, and educators accurately describe pronunciation across languages.
- Example: The word “hello” in British English is transcribed as /həˈləʊ/ in IPA.