例句與造句

1. They are based on the symmetry relations and electron occupancy of the overlapping atomic orbitals [ assuming the localized Heitler-London, or valence-bond, model is more representative of the chemical bonding than is the delocalized, or Hund-Mulliken-Bloch, model ].
2. Complications begin to arise in various situations : 1 ) when direct exchange and superexchange mechanisms compete with one another; 2 ) when the cation-anion-cation bond angle deviates away from 180? 3 ) when the electron occupancy of the orbitals is non-static, or dynamical; and 4 ) when spin-orbit coupling becomes important.
3. It's difficult to find electron occupancy in a sentence. 用electron occupancy造句挺難的