It said an external heat source was not responsible for the fire that destroyed Mr. Hui's phone.

报道还说，外部加热不是回仁杰手机着火的原因。

youdao

And through the water circulating system to all the air conditioning point provide external heat source.

并通过循环水系统向各个空调点提供外部热交换源。

youdao

And we also have a residual heat removal system that also takes the heat from the torus and transfers that heat to an external source providing coolant water to continue to re-circulate the sprays.

我们还有一个余热去除系统，那将凸面的热量除去，并将热量转化为外源，提供冷却剂水，让它能够继续，将喷雾再循环。

youdao

Or they can transport heat from an external source of power and manipulate it to cool a surface.

FORBES: The Trillion Mile-Per-Gallon Engine