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1·The hardness was measured before and after the ageing treatment.

同时用维氏硬度计测量了合金的时效硬度变化。

2·The results indicate that impact toughness of alloy will descend with ageing Treatment temperature increasing.

结果表明，随着时效温度的升高，冲击韧性呈下降趋势。

3·Retrogression and re-ageing treatment can improve their corrosion performance, make the comprehensive properties of alloys better.

回归再时效处理能够改善合金的腐蚀性能，使合金达到较好的综合性能。

4·The anisotropy and it's evolution during ageing treatment for Al-Li alloy 1420 cold-rolling sheet were investigated by means of tensile test and fractograph observation.

通过力学性能测试和断口形貌观察，研究了1420铝锂合金冷轧薄板的各向异性及其在时效过程中的演化规律。

5·They hope this could be used to develop a drug treatment to slow the normal decline in memory associated with ageing, or even improve memory in people who are very old.

他们希望这种化合物可以用来发明一种药物治疗，放慢由于变老造成的正常记忆衰退速度，甚至提高老年人的记忆力。

6·The results indicate that natural ageing after solution heat-treatment leads to the effective increasement of the comprehensive mechnical properties.

通过固溶后自然时效处理，可有效地提高合金的综合力学性能；

7·The results showed that natural ageing after solution heat treatment led to increase the comprehensive mechanical properties effectively.

通过固溶处理后自然时效，能有效地提高合金的综合力学性能。

8·All steel welded structure, vibrating treatment of ageing for removal of internal stress, with good rigidity and stability.

全钢板焊接结构，综合处理(振动时效、热处理)消除内应力，有很好的刚性与稳定性。

9·By employing the orthogonal and ageing-temperature tests, the influences of heat treatment on mechanical properties of 2024 Aluminum alloy sheet were analyzed.

利用正交试验和时效温度试验，分析了不同热处理工艺对2024铝合金材料力学性能的影响。

10·This paper deals with the low frequency damping of ZA27 alloy with solid solution treatment after natural ageing stability.

研究了固溶化处理的ZA2 7合金在自然时效稳定后的低频阻尼。