While some of this can be explained by society—in countries like China baby boys are favoured and many unborn girls are electively aborted—there are natural processes at work.
有些候这种情况可用社会来解释—在中国等国家,男孩比较受欢迎,还未出生的女孩会被选择性堕胎—不过过程也有影响。
While some of this can be explained by society—in countries like China baby boys are favoured and many unborn girls are electively aborted—there are natural processes at work.
有些候这种情况可用社会来解释—在中国等国家,男孩比较受欢迎,还未出生的女孩会被选择性堕胎—不过过程也有影响。
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 .
分析了工艺参数对合金力学性能的影响,阐述了合金效过程中的微观组织变化,找出了2011合金效进程缓慢的原因是异质形核。
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