Mandarin:
热固性塑料

Explanation in English Language (EN):
A polymer that, once cured by heat or chemicals, cannot be remelted or reshaped.

Explanation in Mandarin (ZH):
一旦通过加热或化学方式固化后就不能再熔化或重新成型的聚合物。

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.