It widely used for the anti-lightning link ground device of the buildings and link ground system of electric facilities.

广泛应用于建筑物的防雷接地装置和电气设备的接地系统。

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However, the amount of fallout will vary based on the size of the device and its proximity to the ground.

然而，尘降物的数量会因核装置的大小以及爆炸时与地面的距离而不同。

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Effects from even a small portable device exploded at ground level can be potentially deadly.

一个小型的，可携带的核装置在地表发生爆炸的影响将会是致命的。

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The helicopters are monitored as they fly autonomously to a forward operating base, where a marine controller on the ground takes over using a portable device to direct the drop.

ECONOMIST: Autonomous helicopters

"The breakthrough UI defines a new language for human-device interaction that is built ground-up for eye-free operation, " said Boaz Zilberman, chief executive officer of Project RAY.

ENGADGET: Qualcomm develops eyes-free smartphone for the blind and visually impaired, calls it Ray

Others worry about the device becoming a bacterial breeding ground.

WSJ: Greasy Smudges Frustrate iPad Owners