同时，来自放射性钠一种形式的衰减正电子被慢慢分开且累积起来。

Meanwhile, positrons from the decay of a form of radioactive sodium are separately slowed and accumulated.

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同时，来自放射性钠一种形式的衰减正电子被慢慢分开且累积起来。

Meanwhile, positrons from the decay of a form of radioactive sodium are separately slowed and accumulated.

youdao