Materials science
材料科学
Stronger when stricken
越敲越结实
A new material that gets stiffer when it is stressed
一种受外力时硬度提高的新材料
ONE of the valuable properties of bone is that when it endures repeated stress it respondsby becoming denser and stronger.
骨头有一种很珍贵的属性,那就是当受到反复的击打时,其质地反而会变得更加紧密,坚硬度变得更高。
A living material can do that.
只有活性材料具备这种特征,
A non-living one cannot.
非活性材料则不具备。
It has no way of adding the extra matter needed to provide the extra density.
用添加必要物质来让材料获得更高密度的方法是不可行的,
But it would help engineers a lot if non-living stuff could at least stiffen in response tostressand that may now be possible.
但如果非活性材料起码可以在外力作用下变得坚硬目前达到这一点是可能的,
Brent Carey, a graduate student at Rice University in Texas, thinks he has found a way tomake it happen.
那么这对工程师们来说有非常大的借鉴意义。布伦特凯利是一名德州莱斯大学的研究生,他认为他已找到了实现这一设想的办法。
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