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| the sample average; sample average | |||
| sample mean | |||
| 抽样平均数: 14 phrases in 8 subjects |
| Automobiles | 1 |
| Aviation | 1 |
| Business | 2 |
| Earth sciences | 1 |
| Economy | 2 |
| Quality control and standards | 1 |
| Statistics | 5 |
| Telecommunications | 1 |
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