(六)放射性同位素,是指化学元素中具有相同原子序数,但质量不同且能发生放射性衰变的核素。
Both countries blamed the other for not engaging seriously in diplomacy.
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Galaxy S26 Ultra 售价 9999 元起,提供 12GB+256GB/512GB 和 16GB+1TB,最高售价 13999 元;。关于这个话题,搜狗输入法2026提供了深入分析