This works better than selecting random parents and keeping track of who has been a parent already.
这样做的效果好于选择随机亲本并保持对哪些已经是亲本的追踪。
Sitting next to an exposed subway track, with its sandstone facade and Moorish arches, it looked random in its surroundings and yet utterly appropriate.
我坐在露在外面的地铁铁轨旁边,它看起来显得与周围的环境如此随意而高度的契合。
A new method for a vertical non-stationary random vibration analysis of vehicle-bridge systems subjected to track irregularity excitations is proposed.
提出了考虑轨道高低不平顺时进行车桥耦合系统垂向非平稳随机振动分析的新方法。
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