The Reef's fairly dynamic, it's been through a couple of ice ages, and is still here, so its resilience will ensure that the Reef is still here in years to come.
珊瑚是非常有活力的，它们挺过冰河时期，仍然存在着，其强大的恢复力可以保证珊瑚年复一年的存在。
This paper introduces the producing and acting mechanics of the train vibration loads, wheel-rail couple dynamic model, wheel-rail contact model and irregularity model.
本文首先介绍了列车振动荷载产生和作用的机理，轮轨耦合动力学分析模型，轮轨接触模型和轮轨不平顺模型。
The precision of the dynamic balance can attain by means of decreasing the couple unbalance through moving the balance blocks many a time.
通过多次移动平衡块减小偶不平衡，直至达到动平衡精度要求为止。
The precision of the dynamic balance can attain by means of decreasing the couple unbalance through moving the balance blocks many a time.
通过多次移动平衡块减小偶不平衡，直至达到动平衡精度要求为止。
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