Therein lies the problem with photons – as temperature and radiation intensity decrease, so does the number of photons.
而这就是光子（在制造“超级光子”方面）的问题所在，当温度和辐射强度降低的时候，光子数目也同样降低。
The speed of sound increases slightly with a rise in temperature and falls with a decrease in temperature .
温度的升高或降低对声音传播速度的变化并不产生明显的影响。
The yield of both tar and gas is decreased with the decrease of exhausting temperature of liberated matter.
降低挥发物的出口温度，可以降低焦油和气体收率。
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