| 单词 | Free atmosphere |
| 释义 |
Free atmosphere
原声例句
红字 It was the exhilarating effect—upon a prisoner just escaped from the dungeon of his own heart—of breathing the wild, free atmosphere of an unredeemed, unchristianized, lawless region. 这是一种令人振奋的效果——对一个刚刚从他自己内心的地牢中逃出来的囚犯来说——呼吸到一个未被救赎、未被基督教化、无法无天的地区的狂野、自由的气氛。
英语百科
Planetary boundary layer    The planetary boundary layer (PBL), also known as the atmospheric boundary layer (ABL), is the lowest part of the atmosphere (extending from the ground to the bottom of where cumulus clouds form) and its behavior is directly influenced by its contact with a planetary surface. On Earth it usually responds to changes in surface radiative forcing in an hour or less. In this layer physical quantities such as flow velocity, temperature, moisture, etc., display rapid fluctuations (turbulence) and vertical mixing is strong. Above the PBL is the "free atmosphere" where the wind is approximately geostrophic (parallel to the isobars) while within the PBL the wind is affected by surface drag and turns across the isobars. The free atmosphere is usually nonturbulent, or only intermittently turbulent. |
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