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| ON THE LIFE OF SPHERE ROLLER | |
| 作者姓名： | 成平 施沛德 朱力行 魏刚 |
| 基金项目： | This work is partly supported by the National Natural Science Foundation of China. |
| 摘 要： | In this paper for the life of sphere roller, we derive its limit behavior and by simulation present empirical formulas of its mean, variance and distribution. |
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