valence 以及定义中文意思,

The total energy is written as a combination of valence terms怎么翻译?化学方面的,尤其是最后一个单词

英语翻译
Fig.8 (a) The small valence band offsets allow facile hole transmission through a nanostructured matrix with an endotaxially arranged second phase that simultaneously scatters heat carrying phonons at the matrix/nanostructure interface.(b) Relative energy band diagram for the combined nanostructured matrix showing the large differences in semiconducting band gap and the small energy difference,DE,in the valence band edges.
Fig.9 (a) Temperature dependence of carrier mobilities and lattice thermal conductivity for the PbTe–SrTe system doped with 1% Na2Te.The endotaxial nanostructured SrTe with small valence band offsets allows seamless hole transmission and simultaneously blocks heat carrying phonons at the matrix/nanostructure interface.(b) Schematic representation of the alignment of the valence band (VB) and conduction band (CB) energies of SrTe precipitates in the PbTe matrix.
Fig.12 Hole mobility at 923 K as a function of energy difference for the valence band maxima between metal sulfides and PbS.The minimizing significant deterioration of the hole mobility at high temperatures
indicates that the band energy offset between PbS and CdS decreases with rising temperature due to thermal band broadening