“pressure-altitude variation”的概念、定义、翻译、参考文献-科学参考

单词	pressure-altitude variation
释义	pressure-altitude variation [`presh·ǝr ¦al·tǝ´tüd ´ver·ē`ā·shǝn] ^METEOROLOGY The pressure difference, in feet or meters, between mean sea level and the standard datum plane.
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