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big-bang nucleosynthesis
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big-bang nucleosynthesis
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理学
宇宙的热历史
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big-bang nucleosynthesis
大爆炸核合成
大爆炸后宇宙膨胀温度降到约10亿度时由质子和中子经聚合反应生成氘、氦、锂等轻元素核的过程。
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Adventures of Emperor Chien Lung
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adverse burning in oxygen gun
adverse drug reaction
adverse drug reaction (ADR)
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adverse drug reactions
adverse drug reaction,ADR
adverse effects of blasting control
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