Optional sample changers automate filling and cleaning, freeing lab personnel from these routine tasks.

可选配样品转换器，完成自动进样和清洗，解放实验室工作人员执行的这些常规任务。

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For example, are there any optional elements or attributes that were omitted from the sample document?

例如，样本文档中遗漏了什么可选元素或属性没有？

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Example (optional) — An example of how the term is used, or a typical sample value.

Example(示例，可选)——一个演示术语用法的示例，或者是典型的示例值。

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