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sample technique

chem. 取样法
qual.cont. 采样技术
sampling technique Method of selecting items at random from a set in such a manner that the sample will be representative of the whole
environ. 取样技术 (从一个集合中随机选取某些项的方法,认为样本会代表整体。)
sample technique
: 4 phrases in 3 subjects
Chemistry1
Electronics1
Technology2

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