sampling by classification
... sampling bottle ==> 采样瓶,取样瓶 sampling by classification ==> 分类抽样 sampling by electrostatic precipitation ==> 静电集尘法采样 ...
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sampling by classification
分类抽样
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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A concise result was obtained by sampling, which provided specific data for the macro-classification and evaluation and for working out strategies to control the stored product insects.
共划分为四类区域，分层抽样，进而得出较精确的调查结果，为进行宏观分类评价和制定防治策略提供了数量依据。
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