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21. | sample data |
| 抽样数据 |
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22. | initial samples |
| 原始抽样 |
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23. | convenience sampling |
| 简便抽样 |
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24. | one-phase sampling |
| 单相抽样 |
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25. | method of sampled grade |
| 抽样等级法 |
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26. | attributed sampling |
| 计数抽样 |
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27. | sampling plan |
| 抽样计划 |
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28. | precision of sampling |
| 抽样精密度 |
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29. | theory of sampling |
| 抽样理论 |
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30. | acceptance sampling |
| 验收抽样 |
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