Polonium-210 occurs naturally, but scientists say the high concentrations found in the Litvinenko case indicate production at a nuclear reactor, or a particle accelerator.

钋- 210是自然存在的物质，但科学家们说，利特维年科一案中发现的高浓度显示，是核反应堆、或者是例子加速器生产的。

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Polonium-210 occurs naturally, but scientists say the high concentrations found in the Litvinenko case indicate production at a nuclear reactor, or a particle accelerator.

钋- 210是自然存在的物质，但科学家们说，利特维年科一案中发现的高浓度显示，是核反应堆、或者是例子加速器生产的。

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