假定原子或分子发射光能和吸收光只能不是一个连续的过程，而是阶梯式发生的。
It is assumed that the emission and absorption of light energy by an atom or molecule is not a continuous precess but occurs in steps.
而吸收式口器则有一个管状叫做“喙”的部分，它可以让昆虫通过吸或舔的方式获得水分，不论是从花的花蜜中还是从汽水瓶都可以。
Suckers, on the other hand, have a tube-like mouthpart called a proboscis that allows them to get liquid by sucking or lapping, whether from the nectar of flowers or from a soda can.
热源温度较低时，在溴化锂吸收式制冷机或热泵中使用降膜式发生器可以改善传热传质的性能。
When the temperature of heat source is relatively low, the falling film generator in the lithium bromide absorption machine can improve its heat and mass transfer performance.
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