英语词汇“upper-level trough”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	upper-level trough
释义	upper-level trough upper-level trough [¦əp·ər ¦lev·əl ′trȯf] (meteorology) A pressure trough existing in the upper air, but sometimes restricted to the troughs that are much more pronounced aloft than near the earth's surface. Also known as high-level trough; trough aloft; upper trough.
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