Moreover, the accord does not rule out all nuclear-related research and does not constrain work on missiles. Sales of ballistic missiles and missile parts to Iran are banned for no more than eight years.
此外，该协议并未否定所有与核相关的研究，也没有限制导弹方面的工作。对伊弹道导弹和导弹部件销售禁令不超过八年。对伊常规武器销售禁令不超过五年。