Where there are weak cell phone signals these are really good.

哪里有手机信号弱，这些都是非常良好的。

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However, inactivity can result in a slow and weak heartbeat that does not sufficiently move the blood to provide oxygen for every cell in the body.

然而，不活动可以导致缓慢而无力的心脏跳动，导致不能充分的向身体各部细胞供血。

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But the new paper raises questions about the cell phone industry's claim that its products' emissions are too weak to have any biological effects.

但是，新研究却提出一些疑问，是否像手机行业所宣传的那样，其产品的辐射量极弱，不会产生任何生物效应。

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Called UMA (Unlicensed Mobile Access), the technology is designed to provide better call quality indoors (where your cell shouldn't otherwise work, natch) by switching over from a weak cell signal to a stronger in-home WiFi signal.

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One of the complications with the MicroCell is that in order to avoid interference with local cell towers, it adjusts how strong the signal that it generates in your house is based on how weak your actual cell signal is at the time of initial activation.

FORBES: Some AT&T MicroCell Users Are Experiencing Problems With iPhone 5 and iOS 6

Solar-energy cell sales also fell due to weak demand in Europe amid its financial crisis.

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