Scientists believe that gravity, electromagnetic force, strong nuclear force and weak nuclear force are the Four Basic Forces of the universe.
科学家们认为，万有引力、电磁力、弱力和强力是宇宙中的四种基本作用力。
In nuclei nuclear force is 137 times higher than the electromagnetic force.
在原子核中，核力要比电磁力大137倍。
The historical development, the achievement and the remaining problems of the nuclear force and baryon interactions are reviewed in this paper.
本文评述了核力和重子相互作用研究的历程，取得的成就和存在的问题。
Compared with the other three forces in the universe (electromagnetism, the weak nuclear force and the strong nuclear force), gravity is relatively feeble, making gravitational waves hard to detect.
和宇宙中的其他三种力(电磁力、弱核力、强核力)相比，重力就微弱得多了，所以引力波很难被观测。
The new limits, he argues, will force the Russians and the Americans to stick to a more stable nuclear-force structure.
他认为新的限制将迫使俄罗斯和美国趋于一种更稳定的核力量结构。
The new limits, he argues, will force the Russians and the Americans to stick to a more stable nuclear-force structure.
他认为新的限制将迫使俄罗斯和美国趋于一种更稳定的核力量结构。
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