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| 数学期望［值］ | |||
| 期望值; 数学期望值 | |||
| 数学期望 | |||
| 均值 | |||
| 预期1/4壑; 预期价值; 数学期望值 | |||
| 计算寿命; 数学的期望 (值) | |||
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| 计算寿命; 数学的期望 (值) | |||
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mathematical expectation : 8 phrases in 4 subjects |
| Business | 1 |
| Hydroelectric power stations | 1 |
| Mathematics | 1 |
| Technology | 5 |
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