这项成果是基于，在大型强子对撞机在2010年最后两周的运行期间，对其收集的数据进行的分析，当时这台原子对撞机改换成氢质子对铅离子的碰撞。
The results are based on analysis of data collected during the last two weeks of the 2010 LHC run, when the atom smasher switched from colliding hydrogen protons to lead-ions.
虽然不过三周而已，但大型强子对撞机的铅——铅对撞实验已经排除了一些有关早期宇宙状态的理论。
Although it's only been three weeks, the lead-lead collision experiments in the LHC have already ruled out some theories about how the early Universe behaved.
但本月初，科学家们将质量更大的铅离子注入了大型强子对撞机。
But earlier this month, heavier lead ions were injected into the LHC.
大型强子对撞机的科学家们去年通过粉碎铅离子即在接近光速的状态下被剥掉电子的铅原子的方法制造出了夸克胶胶子等离子体。
LHC scientists made the quark-gluon plasma last year by smashing together lead ions-lead atoms that have been stripped of their electrons-at nearly the speed of light.
结果表明，采用LDA的平面波赝势方法和DFPT方法计算铅的电子结构和声子能量切实可行，计算结果可靠。
The results reveal that it is viable to calculate the electron structure and phonon energy of lead using LDA and DFPT methods, and the calculated results are credible.
结果表明，采用LDA的平面波赝势方法和DFPT方法计算铅的电子结构和声子能量切实可行，计算结果可靠。
The results reveal that it is viable to calculate the electron structure and phonon energy of lead using LDA and DFPT methods, and the calculated results are credible.
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