目前，失眠者能够通过任何睡眠实验室测量他们的睡眠纺锤波，这将能帮助他们测定他们对噪音的敏感性。

For now, restless sleepers can have their sleep spindles measured by any sleep lab, which can help them determine their sensitivity to sounds.

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当我们把放射量测定器放到人们的衣领上测量时发现，大多数时间他们的噪音水平都相当的低，真的是很安全。

When we put dosimeters on people's lapels to measure it we found that their noise levels most days was really low, really very safe.

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通过对具体主通风机改造前、后的技术测定，对能耗和噪音进行了比较，并进行了经济和技术分析。

Based on technical measurement of a certain fan before and after alternation, energy consuming and noise are compared respectively. The economic and technical analysis is made too.

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