a high-speed electron or positron emitted in the decay of a radioactive isotope
Beta particles are high-energy, high-speed electrons or positrons emitted by certain types of radioactive nuclei such as potassium-40. The beta particles emitted are a form of ionizing radiation also known as beta rays.
例句与用法
1.
Standard test method for beta particle radioactivity of water 水的粒子放射性的标准试验方法
2.
Mitchell ' s babyspeak for beta particle 米切尔的嘴里的粒子
3.
The radiation emitted can either be alpha particles , beta particles , gamma rays or neutrons 由不稳定原子核发射出来的辐射可以是粒子粒子射线或中子。
4.
The radiation emitted can either be alpha particles , beta particles , gamma rays or neutrons 由不稳定原子核发射出来的辐射可以是粒子、粒子、射线或中子。
5.
These radionuclides undergo radioactive decay , by emitting harmful alpha particles , beta particles or gamma rays 它们在衰变期间会放出对人体有害的粒子粒子或射线。
6.
These radionuclides undergo radioactive decay , by emitting harmful alpha particles , beta particles or gamma rays 它们在衰变期间会放出对人体有害的粒子、粒子或射线。
7.
When alpha and beta particles strike demron , intervening electrons in the salt atoms deflect and slow them down , whereupon they are absorbed into the material 当与粒子撞及底米龙时，会受盐类原子中的电子影响而偏折并减速，随之被布料吸收。
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