单词 | aerothermodynamic border |
释义 | aerothermodynamic border [¦e·rō´thǝr·mō·dī`nam·ik `bȯrd·ǝr] GEOPHYSICS An altitude of about 100 miles (160 kilometers), above which the atmosphere is so rarefied that the skin of an object moving through it at high speeds generates no significant heat. |
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