“three-kiloparsec arm”的概念、定义、翻译、参考文献-科学参考

单词	three-kiloparsec arm
释义	three-kiloparsec arm [`thrē ¦kil·ō¦pär´sek `ärm] ^ASTRONOMY A region approximately 3 kiloparsecs from the galactic center that displays strong absorption in the 21-centimeter line of atomic hydrogen.
随便看	aperiodic compass aperiodic damping aperiodic waves apers apertometer Apert's syndrome aperture aperture aberration aperture angle aperture antenna aperture card aperture conductivity aperture disk aperture grill picture tube aperture illumination aperture mask aperture plate guidance station equipment guidance system guidance tape guide bearing guide bracket guide coat guide coupling guided bend test

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