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Earth and Space Sciences · 术语表

什么是 Air parcel?

Definition 26.4 University Earth and Space Sciences — Year 1 · 第 26 章 — Structure of the Atmosphere and the Ocean

An air parcel is a volume of air followed in its motion, small enough to have a single temperature and pressure and not to disturb the air around it, large enough to keep its identity: it exchanges no mass and, during a quick displacement, no heat with its surroundings, and its pressure is at every moment that of the surrounding air.

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