noun 下载 🔗分享 正中面, 中间面 (rare outside entomology) The mesial plane dividing the body into similar right and left halves. Examples : "The surgeon carefully marked the patient's abdomen along the meson before making the incision, ensuring symmetrical access for the procedure. " 外科医生在切开病人腹部之前,仔细地沿着正中面标记,以确保手术过程中能对称地进行操作。 anatomy body biology insect 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 介子 A member of a group of subatomic particles having a mass intermediate between electrons and protons. (The most easily detected mesons fit this definition.) Examples : "Physicists study mesons to understand the forces that hold the nucleus of an atom together. " 物理学家研究介子,是为了了解将原子核束缚在一起的力。 physics mass 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 介子 (now specifically) An elementary particle that is composed of a quark and an antiquark, such as a kaon or pion. (Mesons composed of rarer quarks are much heavier.) Examples : "Physicists study the properties of a meson, a type of particle made of a quark and an antiquark. " 物理学家研究介子的性质,介子是一种由夸克和反夸克组成的粒子。 physics element 与AI对话词汇游戏阅读练习