The phenomenological constraints on the down-quark mass matrix in the weak interaction base were investigated.
在夸克的弱相互作用基下，得到了下夸克质量矩阵的唯象约束条件。
In our universe, the down quark is about twice as heavy as the up quark, resulting in neutrons that are 0.1 percent heavier than protons.
在我们的宇宙中，底夸克的质量大约是顶夸克的两倍，造成中子比质子重大约0.1%。
When you go below atomic size and get down to quarks, you drop off the periodic table and start playing with James Joyce who coined the word "quark."
当你从原子那么大再想到夸克，放下元素周期表跟发明了“夸克”这个词的詹姆斯乔伊斯一起玩儿。
Jaffe and his colleagues modeled one family of universes in which the down quark was lighter than the up quark, and protons were up to a percent heavier than neutrons.
Jaffe和他的同事建立了一个类型的宇宙，其中底夸克比顶夸克轻，而质子比中子重1%。
Jaffe and his colleagues modeled one family of universes in which the down quark was lighter than the up quark, and protons were up to a percent heavier than neutrons.
Jaffe和他的同事建立了一个类型的宇宙，其中底夸克比顶夸克轻，而质子比中子重1%。
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