“balloon astronomy”的概念、定义、翻译、参考文献-科学参考

单词	balloon astronomy
释义	balloon astronomy [bǝ`lün ǝ`strän·ǝ·mē] ^ASTRONOMY The observation of celestial objects from instruments mounted on balloons and carried to altitudes up to 18 miles (30 kilometers), to detect electromagnetic radiation at wavelengths which do not penetrate to the earth's surface.
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