This system has been installed on electric resistance welded pipe production line which demands to decrease electric noise.

这个系统现已安装在了需要降低电气噪音的电阻焊管生产线上。

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Lotus has worked on a number of hybrid and electric vehicles and it was while these were moving around its factory that the engineers thought they would be safer if they made a noise.

莲花公司曾经为许多混合型和电动汽车安装声音系统，安装过程中，工程师们都认为能够发声的汽车更加安全。

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In the C30 Electric you get none of that, nor is there really much wind noise to give you any sense of speed. In fact, we didn't really hear any unpleasant sounds until we'd parked the thing.

驾驶c 30电动车很难从风噪声中辨别车速，事实上，直到停车前，我们没有听到任何令人不悦的噪音。

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My missing suitcase housed my overnight essentials, without which I am lost: Egyptian cotton pajamas and a small electric fan for white noise.

WSJ: Traveler's Tale: On the Road Again, and Again, So Help Me

Your Prius is too quiet, at least according to National Highway Traffic Safety Administration (NHTSA) officials who announced new federal rules that will require hybrid and electric vehicles to make more noise.

FORBES: Connect

Yet I am that rara avis, the male of the species who does not own any power tools, other than an electric toothbrush, and who has not been making unnecessary noise nonstop since kindergarten.

WSJ: Joe Queenan on the Sound of One Neighbor Misbehaving | Moving Targets