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Outer arm
释义
Outer arm
Encyclopedia
理学
银河系旋臂
释
Outer arm
银河系外旋臂
银河系的主旋臂之一(见银河系旋臂),又称天鹅-矩尺臂(Cygnus-Norma Arm)。简称外臂。
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photochemical isomerization
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photochemistry of gas
photochemistry of inorganic metallic compound
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