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高速云
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高速云
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星云
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high velocity cloud
高速云
速度超出银河系较差旋转模型值的中性氢云。实际工作中将速度大于等于90千米/秒的中性氢云定义为高速云。
Astronomy
全称:high-velocity cloud。缩写:HVC
高速云
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