Compared to surrounding air, ship exhaust has more particles, and each particle can act as a nucleus around which water vapor condenses.
与周边空气相比，轮船轨迹含有更多微粒。水蒸气围绕着这些作为核子的微粒凝结。
The energy flux and mass flux equations have been established while a liquid vapor phase change occurs on spherical gas nucleus wall on the basis of non equilibrium thermodynamics.
从非平衡态热力学理论出发，建立了有相变发生时球形气核与围流液体之间能量流和物质流的方程序。
These grow directly from condensing water vapor in the air, usually around a nucleus of dust or some other foreign material.
这些冰晶由空气中的水蒸气冷凝而来，通常被灰尘或其他外界物质所包围。
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