1·This first recorded particle is a meson composed of an anti-beauty quark – the beauty quark's antiparticle – and an up quark – one of the two common quarks that make up protons and neutrons.
这次实验，第一次记录下来的是一个介子，它是由一个反美夸克（ 美夸克的反粒子）和一个上夸克（组成质子和中子的普通夸克之一）所组成。
2·Studying the non-leptonic decay of B meson is an important task in particle physics, and any breakthrough in theory may take new blood to this field.
介子的两体非轻子衰变过程是粒子物理中一个很重要的研究课题，任何理论上的突破都会引起广泛的关注。
3·In the framework of quarkonia-quarkonia mixing, considering the effect of the flavor-dependent transitions between quarkonia, the new mass relation of a meson nonet is presented.
摘要在介子-介子混合的框架下，考虑到夸克偶素间的湮灭跟味道有关这种效应，给出了一种新的介子九重态成员间的质量关系。
4·So we transform it to total angular momentum representation in instant form and explore the physical contents of the meson radial eigen equations.
所以我们把这一哈密顿量变换到瞬时形式下总角动量表象中，并仔细分析所得到的介子径向本征方程的物理内涵。
5·King Wen of Jin returned after being ministers, he forgets the meson to push.
晋文公归国为君后，分封群臣时却忘记了介子推。