As an object heats up it radiates heat, but it also generates an electric field near its surface as a result of the random thermal motion of its atoms.
物体温度升高后就会辐射出热量，但由于原子的无规则热运动，在物体表面附近还会产生电场。
But the global temperature mainly depends on how much energy the planet receives from the Sun and how much it radiates back into space-quantities that change very little.
但是，全球气温变化主要在于太阳辐射量及地球对太阳辐射的反射量——这种量的变化十分微小。
The higher the temperature of an emitting body, the faster it radiates infrared energy.
一个辐射体的温度越高，它辐射红外线能量就越快。
The blacker the material, the more heat it radiates away, so the coating could be used on devices that remove heat from instruments and radiate it away to deep space.
越黑的材料辐射出去的热量也就越多，所以这种涂层可以用在转移仪器热量的设备上，将热量辐射进遥远的外层空间。
它向外辐射着。
It radiates microwaves like cellphones. Is it strong?
它和手机一样辐射出微波，它辐射强吗？
It radiates microwaves like cellphones. Is it strong?
它和手机一样辐射出微波，它辐射强吗？
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