| 单词 | 正电子 |
| 释义 | 〔Anderson〕American physicist. He won a 1936 Nobel Prize for his discovery of the positron.安德生，卡尔·戴维：(生于 1905) 美国物理学家，因发现正电子而获1936年诺贝尔奖〔scanner〕A device, such as a CAT scanner or PET scanner, for observing internal organs, tissues, and other parts of the body,放射性扫描仪：用来观察内部器官、组织或身体其它部位的扫描仪器，如计算机断层扫描仪或正电子发射层析扫描仪〔positronium〕A short-lived association of an electron and a positron bound together in a configuration resembling the hydrogen atom.电子偶素，正电子素：电子与正电子的短暂结合物，两者的结合物与氢原子的结构十分相似〔annihilate〕To participate in annihilation, as do an electron and a positron.湮灭，湮没：湮灭，如电子与正电子〔carbonium〕An organic cation, such as H3C, having one less electron than a corresponding free radical and with positive charge localized on the carbon atom. 正碳，阳碳：一种有机阳离子，如H3C，碳原子上具有一个比相对应的原子团弱的电子，并有一正电子 〔antiparticle〕A subatomic particle, such as a positron, an antiproton, or an antineutron, having the same mass, average lifetime, spin, magnitude of magnetic moment, and magnitude of electric charge as the particle to which it corresponds but having the opposite sign of electric charge, opposite intrinsic parity, and opposite direction of magnetic moment. See table at subatomic particle 反粒子：一种亚原子粒子，如正电子、反质子或反中子，与它相对应的粒子有相同的质量、平均寿命、核量子数、磁矩量和电荷量，但具有相反的电荷标志、内在均势和磁矩方向 参见 subatomic particle |
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