Mandarin:
扩散

Explanation in English Language (EN):
The process by which atoms or molecules move from regions of high concentration to low concentration, fundamental to heat treatment and alloying.

Explanation in Mandarin (ZH):
原子或分子从高浓度区域向低浓度区域移动的过程，是热处理和合金化的基本原理。

International Phonetic Alphabet (IPA):
/dɪfjˈuːʒən/

Audio:

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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.