If phone calls and web pages can be beamed through the air to portable devices, then why not electrical power, too?

如果电话和网页都能通过空气发送到移动设备上，为什么电能不行呢？

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Lasers also need chemical fuel or electrical power which is not readily available in space.

激光需要的化学燃料或者电力还没办法轻易安置在太空。

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The breakthrough here is that we do not need to use an electrical power source anymore to provide a little energy into the system.

这项技术的突破点是在这个系统中，不需要再额外施加任何电能。

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The situation has evolved slowly but in a manner that was not anticipated by designers who had not assumed that electrical power to run emergency pumps would be unavailable for days after the shutdown.

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The challenge here is that this takes an incredible amount of processing performance and a lot of electrical power not only inside the compute engine but also to power the high res, stereo cameras.

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It does not appear there was fire inside the batteries, which are used mainly to provide electrical power during ground operations.

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