Mandarin:
范德华力

Explanation in English Language (EN):
Weak attractive forces between molecules or atoms due to temporary dipoles, important in polymer and nanomaterial behavior.

Explanation in Mandarin (ZH):
由于临时偶极子产生的分子或原子之间的弱吸引力，在聚合物和纳米材料中很重要。

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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.