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.
有些时候这种情况可用社会来解释—在中
家，男孩比较受欢迎，还未出生的女孩会被选择性
堕胎—不过自然过程也有影响。
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.
有些时候这种情况可用社会来解释—在中家，男孩比较受欢迎，还未出生的女孩会被选择性堕胎—不过自然过程也有影响。
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
学性能的影响,阐述了时效过程中的微观组织变化,找出了2011自然时效进程缓慢的原因是异质形核。
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