The flow of heat into the ground by day and from the ground at night.

白天到达地面，晚上由地面发散的热量流量。

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Any cracks will alter the flow of heat, and these changes can be picked up with a heat-sensitive camera.

通过一台热敏感摄像机就能够捕捉到飞机上的裂痕，因为这些裂痕会改变热流的方向。

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Vehicles used to transport perishable food products should be well insulated to retard the flow of heat through their walls.

用于运送易腐食品的车辆一般都要有很好的隔热效果，从而减缓通过车身进行热传导。

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You do it so quickly that the heat flow between the inside of the bicycle pump and the outside is too slow compared to the speed at which you compress.

我们用力很大,于是压缩得很快,打气筒内外热传递的速度,与之相比要慢得多。

麻省理工公开课 - 热力学与动力学课程节选

You couldn't just run something successfully in a cycle and get work out of it, using the heat from the hot reservoir, without also converting some of the heat that came in to heat that would flow into a cold reservoir.

如果一样东西在循环工作过程中,只有热从高温热源中流出，而没有热流入低温热源，那么此过程,不可能对外做功,不可能把所有热。

麻省理工公开课 - 热力学与动力学课程节选

Home insulation, often referred to as cavity insulation, is a cast iron money saver during the winter months because it regulates the flow of heat from a warm area to a cold one.

FORBES: How To Winterize And Heat Your Home For Less

Once the home has been duly sealed, the flow of air, moisture and heat in and out of it can be carefully controlled.

ECONOMIST: Green homes

Richard Hamilton of Columbia University had previously realised the usefulness of this heat-flow model but became unstuck when he found that, under this transformation, the object may stretch out to form singularities spikes that could not be easily manipulated into a sphere.

ECONOMIST: Proof of the truth of the Poincar�� conjecture