科学家把这些常见物统称为“重物质”，因为质子和中子都属于亚原子结构的重子。
Scientists call ordinary matter "baryonic matter" because protons and neutrons are subatomic particles called baryons.
它涵盖对宇宙从最大的星系到亚原子粒子整个空间范围的研究，覆盖力学、辐射、热、电、声、磁和原子结构等等。
It encompasses the study of the universe from the largest galaxies to subatomic particles, covering mechanics, radiation, heat, electricity, sound, magnetism and the structure of atoms.
它涵盖对宇宙从最大的星系到亚原子粒子整个空间范围的研究，覆盖力学、辐射、热、电、声、磁和原子结构等等。
It encompasses the study of the universe from the largest galaxies to subatomic particles, covering mechanics, radiation, heat, electricity, sound, magnetism and the structure of atoms.
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