For the initial experiment, lone fish were trained in the lab to associate a door bearing a certain number of geometric shapes with the path to rejoining a larger group.
最初的实验中，一条鱼在实验室里训练，通过一个几何形状的门能够回到群体中去。
Motivational posters hung on one wall, bearing slogans like “Failure is the path of least persistence.”
励志海报挂了一面墙壁，海报写着“坚持就是胜利”等口号。
By the way of improving roller dimensions, roller number, outer roller path diameter, stop groove diameter and the effective thickness, the using reliability of the bearing is advanced.
通过对轴承结构中的滚子尺寸、滚子数量、外圈滚道直径、止动槽直径公差及有效壁厚的改进，提高其使用的可靠性。
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