| 单词 | Electrons,Fast |
| 释义 | Electrons,Fast《英文msh词典》Electrons,Fast [入口词] Electrons,Fast [主题词] Electrons [英文释义] Stable elementary particles having the smallest known negative charge,present in all elements; also called negatrons. Positively charged electrons are called positrons. The numbers,energies and arrangement of electrons around atomic nuclei determine the chemical identities of elements. Beams of electrons are called CATHODE RAYS or BETA RAYS,the latter being a high-energy biproduct of nuclear decay. |
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