在经验关系式中，这些项的指数不是常数。

The exponents of these terms in a correlation should not be constant.

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本文着重研究有机聚合物线性烧蚀速率(AR)、烧蚀隔热性能指数(API)和有机聚合物结构常数(K)与烧蚀隔热性的关系。

The relation of linear ablative rate (ar), ablative heat insulating property index (API) and structure constant (K) to ablative heat insulating property were studied in this paper.

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晶粒长大过程都遵循指数关系，其时间常数均小于0.5。

All the grain growth processes follow the exponential relationship, and the time constants are all less than 0.5.

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