Ageing mechanism of durability of various kinds of sealants was discussed in the light of their cross-linking process, testing results of heat ageing and Xenon lamp weathering.
本文结合各类密封材料的交联反应过程和热老化、氙灯老化试验结果，对其耐久性的老化反应机理进行了探讨。
Weathering, being a natural process that decreases rock strength, stiffness and durability, is specially concerned in investigation and design of rock engineering.
由于风化会对岩石强度、刚度和耐久性产生重大影响，故在岩石工程勘察设计中需对其进行重点研究。
Weathering, being a natural process that decreases rock strength, stiffness and durability, is specially concerned in investigation and design of rock engineering.
由于风化会对岩石强度、刚度和耐久性产生重大影响，故在岩石工程勘察设计中需对其进行重点研究。
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