positron

positron什么意思,positron翻译

基本解释

n.: 正电子；阳电子
网络: 正子；反电子；正子电脑断层扫描

权威解释

• 正电子；阳电子:

  a particle in an atom which has the same mass as an electron and an equal but positive charge

英汉解释

• 【物理学】正子,阳电子,正电子

词性分析

• 复数：positrons

例句

• So, the antiparticle of the normal electron is called the positron, as it has a positive charge, but the same mass as the electron.

  这样，正常电子的反粒子叫做正（阳）电子，如同它有一个阳电荷一样，但是与电子的质量一样。

• Some of these gamma rays pass near atomic nuclei, in the process transforming into an electron and a positron, researchers said.

  某些伽马射线在靠近原子核的附近经过，进入到转化为个电子和正电子的过程，研究人员说。

• For instance, the antimatter opposite of an electron, known as a positron, is positively charged.

  例如，电子的反物质就是带正电的质子。

• Total cross sections for positron scattering on potassium were calculated at low energies by means of the coupled channels-optical method.

  应用耦合通道光学势方法计算低能正电子同钾原子碰撞的总散射截面。

• Next the antiatoms encounter a strong electric field that strips apart the antiproton and positron of the weakly bound antiatoms .

  接著，反原子会遇到一个强电场，把束缚松散的反原子里的反质子及正子给拆开。

• It was only in 1932, when the electron"s antimatter sibling, the positron, was sighted in cosmic rays that such a thing was found to exist.

  只有当1932年与电子相反的兄弟，正电子，在宇宙射线中被发现的时候，才证明这种物质的确存在。

• An atom of antihydrogen, for instance, is composed of a negatively-charged antiproton being orbited by a positively-charged positron.

  举例来说，一个反氢原子，由带正电荷的正电子围绕带负电荷轨道运行的反质子组成。

• From earlier results using much less data, the positron cloud seemed to be spherical and centred on the centre of the galaxy.

  从使用较少数据的早期结果来看，正电子云似乎是呈球状位于银河中心。

• Blackett was really the first to obtain hard evidence for the existence of a positron but he was afraid to publish it.

  布莱克特几乎是第一个发现正电子存在的有力证据的人，但他却没敢发表这个结果。

• A positron is an anti-electron, a mirror-image particle with the same properties as an electron, but an opposite, positive charge.

  一个正电子则是一个反电子，即与一个电子有相同属性的镜象粒子，只是其电荷性质相反即带正电荷。