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sampling scheme | |||
plan of sampling | |||
sampling scheme surveys; sampling plan; sample plan | |||
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sampling plan | |||
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ten-percent sampling plan | |||
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sampling plan | |||
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sampling plan |
抽 样方案 : 30 phrases in 9 subjects |
Aviation | 2 |
Business | 7 |
Commerce | 1 |
Information technology | 1 |
Mathematics | 6 |
Oil / petroleum | 1 |
Space | 2 |
Statistics | 3 |
Technology | 7 |