Mandarin:
内酰胺聚合 (nèi xiān àn jù hé)

Explanation in English Language (EN):
Lactam polymerization is a type of ring-opening polymerization that involves the reaction of lactam monomers. Lactams are cyclic amides. During polymerization, the ring is opened, and the monomers link together to form a polymer chain. Lactam polymerization is commonly used to synthesize polyamides, such as nylon.

Explanation in Mandarin (ZH):
内酰胺聚合是一种开环聚合，涉及内酰胺单体的反应。内酰胺是环酰胺。在聚合过程中，环被打开，单体连接在一起形成聚合物链。内酰胺聚合通常用于合成聚酰胺，例如尼龙。

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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.