可转换的与易裂变的核素的比的英文

fertile-to-fissile ratio

• 可:    approve
• 转换:    change; transform; ...
• 的:    4次方是 The fourth po ...
• 与:    take part in; part ...
• 易:    easy
• 裂变:    atomic fission; fi ...
• 核素:    nuclein; nuclide; ...
• 比:    2