Sampling should be performed after each step in the treatment process and from each point of use.

应在处理过程中的每个步骤之后以及每个用点处进行取样。

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The synoptic sampling scheme is often employed on a monthly time step throughout a year.

抽样方案在月度时间步经常被使用在一年期间。

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The dissolution step is the release of the drug inthe dissolution medium and sampling. The analytical finish is defined insection 3.

溶出步骤是指药物在溶出介质中的释放和取样，分析方法的定义详见第3章节分析方法。

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Repeated sampling was conducted at four wells where EPA was delivering temporary water supplies as a precautionary step in response to prior data indicating levels of contaminants that potentially posed a health concern.

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