下夸克 meaning in English
down quark
Examples
- Only three of them are important in everyday life : u , d and e
在日常生活中，只有三种粒子是重要的：上夸克下夸克和电子。 - In summary , the up and down quarks make up all the nuclei and electrons orbiting around nuclei form atoms
总括来说，上夸克和下夸克组成原子核，而电子则围绕原子核而形成原子。 - Proton is , in turn , made up of two up quarks and one down quark . neutron is made up of two down quarks and one up quark
质子的内部是三粒夸克：两粒上夸克和一粒下夸克uud中子的内部也是三粒夸克：一粒上夸克和两粒下夸克udd 。