You turn the door knob, step over the door threshold and find this beautiful room that just feels like a soft glowing light.

你转动门把手，跨过门槛进入门内，发现这个漂亮的房间感觉起来有些像是用柔和辉光构建的。

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The nice thing about it is that we can really have a knob, if you like, which we can control to adjust the rate at which we inject these particles.

非常棒的是我们真的可以得到一个能控制调节粒子注入大气速率的大球体。

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Varying the voltage or the distance between the ground plate and the graphene alters the conductivity, "just like tuning a knob," Engheta said.

改变电压或是接地板与石墨层之间的距离都能改变传导率，“就像调节旋钮一样”，Engheta说。

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Established home security companies like Kwikset and mobile carriers (via unnamed OEMs) are working to combine smartphones and deadbolts, while startups like Smart Knob are using offline technology to simplify vacation rentals.

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The top is split, by the way, and can be used like a volume knob.

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People turned a knob and an EKG-like graph showed up on the computer screen.

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