When intersected with electric line, the coating of the pipeline will be aging due to secondary voltage inducted.
管道与电力线交叉时，由于感应二次电压而使管道防腐层老化。
2
The precipitation process of the secondary phase could be accelerated by cold deformation before aging, which greatly improved the properties of the alloy.
时效前冷变形能大大加快第二相的析出过程，使合金综合性能得到显著提高。
3
Aging leaves were little changes in protein secondary structure, it showed there was no dramatically damage to them.