Werner Heisenberg advanced a theory of nuclear composition.

海森堡提出一个关于原子核组成的理论。

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Werner Heisenberg advanced a theory of nuclear composition. w.

海森堡提出一个关于原子核组成的理论。

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The measure technology of multi-channel nuclear energy spectral is the basis of matter composition analysis and radioactivity detection by way of nuclear analysis method.

多道核能谱测量技术是用核分析方法进行物质成分分析和放射性检测的基础。

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Joseph De Trani, former head of the National Counterproliferation Center, predicted U.S. intelligence would determine the size and composition of the nuclear device in one to three days based partly on radioactive elements released into the environment.

NPR: NKorean Nuclear Test May Be Intelligence Windfall

"We can and will change the size, the composition, the character of our nuclear forces in a way that reflects the reality that the Cold War is over, " Bush said.

CNN: Bush suggests junking missile treaty with Russia

The size and composition of the current U.S. nuclear weapons stockpile have been determined by a number of relevant factors over time.

CENTERFORSECURITYPOLICY: US Nuclear Stockpile