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unitary sampling
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math.
单式抽样，单一抽样
;
单级抽样，单阶段抽样
stat.
单式抽样
;
单一抽样
;
单级抽样
;
单阶段抽样
;
一元抽样
unitary sampling
:
1 phrase
in 1 subject
Business
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