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big-bang nucleosynthesis
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big-bang nucleosynthesis
Encyclopedia
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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typical operation profiles flight test
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typical troubles of gas turbine and combined cycle unit
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Typography Publication for Western Xia
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