The methods used for analysis and sampling are the necessary basis for food inspection and control.
分析和取样方法是对食品进行检验和控制的必要基础。
This paper introduced several methods about the concrete strength inspection: the sampling method given by the present specification; simple random sampling without replacement; stratified sampling.
具体介绍了砼强度检测抽样的几种方法：现行规程抽样法；简单随机抽样法；分层抽样法。
Compose raw material inspection instructions, sampling plan and test methods.
编制检验规范、样计划和测试方法。
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