Contraction of front and side parts as cells die off was observed in some subjects in their thirties, but it was still not evident in some sixty and seventy-year-olds.
随着细胞的死亡,有些人大脑前部和侧部的收缩,在三十多岁时就能观察到,但是也有些人直到六七十岁依然不明显。
Until the day I die, I'll never forget standing in front of a very powerful man in a country.
只到我死的那天,我都无法忘记,曾站在一个非常有权势的人面前。
Taking the front bracket of automobile saddle runner as an instance, combining with its special process of die design, the process analysis and die structure analysis are carried out.
以汽车座椅滑槽前支架为例,结合其模具设计特有工艺性,进行了工艺分析、模具结构分析;介绍了模具设计要点,并更多的考虑了模具结构的可调整性、易更换性及模具成本。
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