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标签: electrons
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- When dopant with valence electrons less than those in the host semiconductor is introduced, the resulting doped system is n-type
- The scanning electron microscopy（SEM）uses a focused beam of high-energy electrons to generate a variety of signals at the inside
- In the fuel cell，the（）is a substance specifically designed so ions can pass through it, but electrons cannot.
- Atomic level structure involves electrons within the individual atoms and interactions with their nuclei.
- Polymers transmit heat mainly through free electrons.
- The key word to describe the nature of covalent bond isof electrons
- The key word to describe the nature of ionic bond is of electrons