Mandarin:
热氧稳定性 (rè yǎng wěn dìng xìng)

Explanation in English Language (EN):
Thermooxidative stability refers to a polymer's resistance to degradation caused by the combined effects of heat and oxygen. At elevated temperatures, polymers can undergo oxidation reactions with oxygen in the air, leading to chain scission, crosslinking, and other chemical changes. These changes can result in a deterioration of the polymer's properties, such as decreased molecular weight, loss of strength, and embrittlement. Thermooxidative stability is an important consideration for polymers used in high-temperature applications or those exposed to oxidative environments.

Explanation in Mandarin (ZH):
热氧稳定性是指聚合物对热和氧的综合作用造成的降解的抵抗力。在高温下，聚合物会与空气中的氧气发生氧化反应，导致断链、交联和其他化学变化。这些变化会导致聚合物性能下降，例如分子量降低、强度损失和脆化。对于用于高温应用或暴露于氧化环境中的聚合物来说，热氧稳定性是一个重要的考虑因素。

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International Phonetic Alphabet (IPA)
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