提供了实验结果，并对自然时效的机制进行了研究。
In this paper, the results of experiments were provided, the micro-mechanisms of natural ageing were studied.
经固溶处理和自然时效的铝铜合金可以进行硬质阳极氧化。
Hard anodizing film could be obtained on Al-Cu alloy surface which had been treated with solid solution treatment and natural aging.
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。
The results showed that natural ageing after solution heat treatment led to increase the comprehensive mechanical properties effectively.
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；
The results indicate that natural ageing after solution heat-treatment leads to the effective increasement of the comprehensive mechnical properties.
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。
This paper deals with the low frequency damping of ZA27 alloy with solid solution treatment after natural ageing stability.
此外，两次硬度试验表明，自然时效对两种状态合金的硬度分布存在影响。
In addition, two hardness tests showed that the natural aging has great influence on the hardness distribution in the two alloys.
介绍镀锌低碳钢丝经软化处理后产生的自然时效及其对钢丝力学性能的影响。
To introduce natural aging of galvanized low carbon steel wire after softening treatment and effect of the aging on mechanical properties of steel wire.
介绍镀锌低碳钢丝经软化处理后产生的自然时效及其对钢丝力学性能的影响。
To introduce natural aging of galvanized low carbon steel wire after softening treatment and effect of the aging on...
材料在自然时效与低温退火过程中，有沉淀强化效应产生，但导电率基本保持稳定。
There are precipitation strengthening effect during nature aging and low-temperature annealing, however, the conductivity remains stable basically.
对采用轧后余热处理工艺生产的英标460级钢筋进行不同时间的自然时效后测定其力学性能。
The British Standard grade 460 bars, which when quenched with left heat after rolling, are naturally aged for different times.
通过实例分析，得出薄板焊接结构件自然时效周期远远小于实心件周期，并对其机理进行了分析。
Through the analysis of the example and mechanism, the natural ageing cycle of the structure welded by than plate is less than the one welded by solid metal.
通过实例分析，得出薄板焊接结构件自然时效周期远远小于实心件周期，并对其机理进行了分析。
Through the analysis of the example and mechanism, the natural ageing cycle of the structure welded by than plate is less than the one welded by solid metal. It's mechanism is analyzed.
区，使得在随后的时效过程中形成高密度的强化相，减少自然时效的不利影响，提高合金的硬度。
Pre-aging increases the density and volume of precipitates after artificial aging, which decreases the disadvantage of the nature aging and improves the hardness of auto sheets.
大理石平板取材于地下优质的岩石层，经过亿万年自然时效，形态极为稳定，不用担心因常规的温差而发生变形。
Marble slab are based on the quality of the rock underground, after millions of years of natural aging, form extremely stable, do not worry about the normal temperature and deformation.
得到3种时效处理方法的绿色性综合评分值分别为：振动时效66.8分、热时效56.8分、自然时效53分。
Green synthesis value of three aging treatments is obtained which respectively is: Vibration effectiveness 66.8, hot aging 56.8 minute, natural aging 53.
同时用微型剪切试验研究了几种铝合金焊接接头的自然时效的微区性能变化和焊接规范对铝合金焊接接头性能的影响。
At the same time, using the micro-shear test result to study the micro-performance changes in natural aging of several Al-alloy joints, and the influence of Al-alloy joint by welding parameters.
分析了工艺参数对合金力学性能的影响，阐述了合金时效过程中的微观组织变化，找出了2011合金自然时效进程缓慢的原因是异质形核。
The microstructure deformation in the aging process of the alloy has been stated, and the heteromorphy has been found the cause of the natural aging process of the 2011 alloy.
自然选择有其时效性和突发性，可能每年都会偏向不同的基因。
Natural selection may just gust about, favoring different sets of genes from one year to the next.
对于我，音乐是非常重要的，但我一直顺其自然，并没有集中时间取得时效性的进步。
For me, music is incredibly important, yet I've always tended to take it for granted and have not focused my time and efforts towards it in the way I might have.
利息诉讼时效的中断，自然及于本金，因为利息是依附本金而生的孳息。
The stop of action limitation extend to principal , for interests is born on the principal naturally .
而由于人为破坏或大自然侵蚀的原因，题壁在传播的时效性上又不及书册和刻石。
However, for the natural and man-made reasons, the opportuneness of such communication cannot come up with that of the writing on papers or carved on the stones.
如果根据各主目的某种自然顺序去整理表的登记项，将来，真正查找时效率就比较高。
Searching can be accomplished more sufficiently if the table entries are sorted according to some natural ordering of the arguments.
如果根据各主目的某种自然顺序去整理表的登记项，将来，真正查找时效率就比较高。
Searching can be accomplished more sufficiently if the table entries are sorted according to some natural ordering of the arguments.
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