结合工程实例，论述了重力式码头抛石基床遭拖轮启动工作时尾吹水流冲刷破损后的检测诊断方法和加固治理措施。

Based on the actual example in the project, we discuss the diagnosis methods and reinforcement measures when rubble bed of gravity wharf is damaged by water flow from tugboat's starting.

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在以往的间冰期中，当冰川消退时，它们在尾迹中留下了开阔的土地。

During previous interglacial periods, when glaciers retreated, they left behind open land in their wakes.

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当尾锥被移除时，我们可以看到推进器锥。

As the tailcone is removed we can see the thruster cones.

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s Here you would have a 2s, here is a 2s, and when the two of them smear we end with something that looks like this.

这里一个2s，这里一个，当这两个发生拖尾时,我们就像这样结束它。

麻省理工公开课 - 固态化学导论课程节选