nuclear threshold state 核门槛国家
nuclear threshold countries 核门槛国家
nuclear fission threshold 裂变阈能
N the point in war at which a combatant brings nuclear weapons into use 核门槛; 战争中参战者拿出核武器使用的时刻
Ford: as I said earlier, the toughest foreign policy decision was negotiating with Mr. Brezhnev to reduce the nuclear threshold.
福特：如我之前所说，最艰难的决定就是和勃列日涅夫先生谈判核门槛问题。
The threshold energy formula of nuclear reaction in which energy is absorbed is obtained using laboratory frame. It is consistent with the result obtained in mass center frame.
在实验室坐标系下，给出吸能核反应所要求的阈能，其结果与质心系下得到的结果完全一致。
In nuclear physics, threshold energy is generally calculated by the method of coordinate transformation.
在核物理学里，求阈能一般用坐标变换的方法。
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