electron

From Longman Dictionary of Contemporary EnglishRelated topics: Physicselectrone‧lec‧tron /ɪˈlektrɒn $ -trɑːn/ noun [countable] HPa very small piece of matter with a negative electrical charge that moves around the nucleus (=central part) of an atom → proton, neutronExamples from the Corpuselectron• Although small, these single crystals can be studied using an electron microscope.• The world it presents is populated by entities such as electrons and quarks.• Crystal cleanliness and crystallinity were checked by Auger electron spectroscopy and low energy electron diffraction, respectively.• In electron sharing, a shared electron can not be considered to have been gained or lost.• The valency of an atom in a covalent molecule is the number of electrons shared by the atom in forming the bond.• Screen-printed silver metal contacts on the surface of the wafer collect the streams of electrons and produce an electric current.• This leaves one electron on each carbon atom unaccounted for.• How near depends on the electron energy.Origin electron (1800-1900) electro- + -on (as in ion)

单词	electron
释义	electron From Longman Dictionary of Contemporary EnglishRelated topics: Physicselectrone‧lec‧tron /ɪˈlektrɒn $ -trɑːn/ noun [countable] HPa very small piece of matter with a negative electrical charge that moves around the nucleus (=central part) of an atom → proton, neutronExamples from the Corpuselectron• Although small, these single crystals can be studied using an electron microscope.• The world it presents is populated by entities such as electrons and quarks.• Crystal cleanliness and crystallinity were checked by Auger electron spectroscopy and low energy electron diffraction, respectively.• In electron sharing, a shared electron can not be considered to have been gained or lost.• The valency of an atom in a covalent molecule is the number of electrons shared by the atom in forming the bond.• Screen-printed silver metal contacts on the surface of the wafer collect the streams of electrons and produce an electric current.• This leaves one electron on each carbon atom unaccounted for.• How near depends on the electron energy.Origin electron (1800-1900) electro- + -on (as in ion)
随便看	give a wide berth give a yawn etc give ammunition with ammunition give an a an idea give an a sense idea give an account give an account/description give an assurance give an assurance that give an description give an earful give an explanation give an illusion give an impression an idea give an impression sense idea give an incentive give an inch and they'll take a mile give an inch and they'll take a yard give an inch and theyll take a mile give an inch and theyll take a yard give an overview give and take give artistic) expression to give as good as you get give attention etc