Five years after the United Nations Security Council ordered it to halt uranium enrichment, Iran still has thousands of centrifuges spinning at its Natanz plant.
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其中一份电传说这些控制器发往伊朗，用来控制“铀浓缩级联”——有关成群旋转离心机的术语。
They were headed for Iran, one cable said, and were meant to control "uranium enrichment cascades" - the term for groups of spinning centrifuges.
The Isfahan conversion plant, which produces uranium hexafluoride (UF6, the uranium compound that is passed as a gas into the centrifuges to be enriched), is above ground and vulnerable to attack.
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