On cooling to room temperature and left to stand, the biodiesel floats up, leaving a layer of glycerine at the bottom.
之后将其冷却至常温，静止一会，生物燃油就浮上表面了，底部会留下一层甘油。
But with each collision, the photons slowly assumed the temperature of the pigment molecules, cooling one another to room temperature without being lost in the process.
而每经过一次碰撞，光子的温度会慢慢地趋近于色素分子的温度，进而降温至室温，而且光子在这一过程中不会消失。
Cooling the sample from room temperature (290k) to liquid nitrogen temperature (77k) decreases the voltage noise by approximately a factor of two.
将样品从室温温度(290k)降低到液氮的温度(77k)，可以使得噪声电压减小大约一半。
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