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样品选取的几个专业,求人帮忙
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Sampled portion: A quantity of product constituting a unit, and having characteristics presumed to be uniform. Incremental sample: A quantity taken from one point in the sampled portion. Aggregate sample: An aggregate of incremental samples taken from the same sampled portion. Reduced sample: A representative part of the aggregate sample, obtained from the latter by a process of reduction. Final sample: A representative part of the reduced sample. |
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