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武汉鑫旺饲料科技有限公司-企业-农博数据中心

武汉鑫旺饲料科技有限公司-企业-农博数据中心
aweb.com.cn - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from aweb.com.cn Daily Mail and Mail on Sunday newspapers.

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这片绿洲的存在，至今仍是未解之谜

这片绿洲的存在，至今仍是未解之谜
huxiu.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from huxiu.com Daily Mail and Mail on Sunday newspapers.

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北京怀柔索兰诺中学_中华网

北京怀柔索兰诺中学_中华网
china.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from china.com Daily Mail and Mail on Sunday newspapers.

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最热星的冷知识：温度3万度以上几万个太阳光度 - 科学探索 - cnBeta COM

通常，正常的恒星按其光谱特征被分为O、B、A、F、G、K、M型。这个分类序列也代表着一个温度序列，其中O型星温度最高，而M型星温度最低。随着观测技术的发展，最近人们发现了更冷的L和T型星，甚至还有最冷的Y型星。大多数人对恒星的认识，几乎都来自于常见的F、G、K型星，但作为最早的O型星，其质量一般要超过16个太阳质量，温度在3万度以上，光度至少是几万个太阳光度，与我们常见的F、G、K型星相比，O型星

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