有三种元素abca元素的原子核外有12个电子b元素原子构成的固体单质在空气中燃烧�出微弱的淡蓝色火焰c元素的原子结构示意图如图请按 Sketch Coloring Page

有三种元素abca元素的原子核外有12个电子b元素原子构成的固体单质在空气中燃烧�出微弱的淡蓝色火焰c元素的原子结构示意图如图请按 Template

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tomski有三种元素abca元素的原子核外有12个电子b元素原子构成的固体单质在空气中燃烧�出微弱的淡蓝色火焰c元素的原子结构示意图如图请按 coloring

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有三种元素ABCA元素的原子核外有12个电子B元素原子构成的固体单质在空气中燃烧�出微弱的淡蓝色火焰C元素的原子结构示意图如图请按 sketch template

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