Our results indicate that the energyvalley of conduction band of Ge is not lying in the center of Brillouin zone and the constant energy surface possesses non-spherical symmetry.
这些结果表明锗导带能谷不在布里渊区中心，且具有非球形对称等能面。
2
While one half of Silicon Valley is busy developing clean supplies of energy, the other half is working out ways to reduce demand for the dirty kind.
硅谷的一半人员在忙于开发清洁能源的供给问题，而另一部分正在想办法来降低污染严重能源的需求。
3
All of a sudden, not just a few start-ups but the entire renewable-energy industry was staring into the Valley of Death.