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.
有候这种情况可用社会来解释—在
国等国家,男孩比较受欢迎,还未出生
女孩会被选择性
堕胎—不过自然过
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.
有候这种情况可用社会来解释—在
国等国家,男孩比较受欢迎,还未出生
女孩会被选择性
堕胎—不过自然过
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影响,阐述了合金
效过
微观组织变化,找出了2011合金自然
效进
缓慢
原因是异质形核。
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