“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.
随便看	standard plane standard potential standard preemphasis standard pressure standard project flood standard propagation standard rate turn standard reference material standard refraction standard sand standard score standard seawater standard shaft standard solution standard star standard state standard station standard subroutine standard target standard temperature and pressure standard terminal arrival route standard test-tone power standard time standard ton standard trajectory

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