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| 比例任意抽样法 | |||
| 比例取样法 | |||
| 比例抽样 | |||
| 比例抽［取］样 | |||
| 按比例抽样 | |||
| proportionate sampling: 3 phrases in 3 subjects |
| Economy | 1 |
| Quality control and standards | 1 |
| Technology | 1 |
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