When we can see it, it appears as a fuzzy ball.
当我们能看到它时，似乎只看到一个模糊的球体。
The concepts of fuzzy ball, fuzzy press-ball and fuzzy neighborhood were proposed in this paper, which were employed to describe the fuzzy nature language words nearby a point or about a number .
引入模糊球、模糊压缩球、模糊邻域等概念，用来作为对模糊自然语言词组“一点附近”、“某值附近”等的描述，分别从相关数学性质分析证明和示例仿真两个方面说明这种模糊描述的有效性。
Off-line calculation and fuzzy control inquiry table are carried out, and good control effect is obtained; the ball can roll on the plate freely without flying out the plate.
通过大量离线计算，建立了模糊控制查寻表，取得了较好的控制效果，能使小球在小板上自由滚动而不飞出小板。
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