... 分层抽样;分类抽样;类型抽样;stratified sampling 等距抽样;系统抽样;机械抽样;systematic sampling 比例抽样;proportional sampling ...
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... 机械充填 mechanical stowing 机械抽样 mechanical sampling 机械初步抽空泵 mechanical roughening pump ...
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短语
机械抽样法
mechanical sampling method
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systematic sampling
mechanical sampling
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