该方法旨在定义硬度计硬度<=90肖氏A的热塑性弹性体和热固性橡胶的连续温度上限（CUTL），当长时间仅暴露于热空气中时，其会发生氧化或其他降解。

This method is intended to define the continuous upper temperature limit (CUTL) of thermoplastic elastomers and thermoset rubber with durometer hardness <=90 Shore A, to oxidation or other degradation when exposed solely to hot air for an extended period of time.