The yellow index of blends at different mixing time and thermal aging time increased obviously than that of pure polymer.
在不同混炼时间及热老化时间下，共混物的黄度指数相对纯聚合物有明显提高。
By using this model, the aging properties of "o" type rubber sealing ring at different time was calculated and compared with the experiment results.
运用该模型计算了“O”型橡胶密封圈在不同时间下的老化性能，并与实验结果进行了比较。
Different precipitation types of carbide in the alloy are transformed in long time aging treatment, turn to M_ (23) C_6 type at lower temperature and turn to MC type at higher temperature.
在长期时效中，合金存在不同类型碳化物之间的转变，较低温度时向M _ (23) C_6型碳化物转变，较高温度时向MC型碳化物转变。
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