通过对比实验，研究了铝合金管材挤压时内表面出现的石墨压入缺陷的形成过程及影响因素。提出了预防此缺陷的措施。
Through some comparison experiments, the forming course and affecting factors of the pressing graphite defects of aluminium alloy pipes are studied. Some methods of avoiding the defects are presented.
通过几种充电模式充电时析气的对比实验证实慢脉冲快速充电方法是一种低析气量、高效率的快速充电模式。
By comparing the volume of gas evolution under several different charging models, it was verified that fast charge with slow pulse was a kind of low...
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