撞击过程实际上是一个防撞梁在船体撞击作用下的弹塑性动力响应问题。
The process of impact is really an elastoplastic dynamic response by the action of ship impacting anticollision beam.
本文试图回顾近几十年人头颅受直接撞击作用的力学分析的研究进展情况。
The present paper gives a historical summary of the mechanical analysis of human head under direct impact in recent years.
笔者认为这种PGE元素异常和粗铂矿的发现是陨石及其撞击作用的重要依据之一。
The authors consider the discovery of PGE anomaly and platina as significant evidence for confirming the meteorite impact event.
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