But the fact that the excess bariums are responsible for electron emission may be reconciled with the deficiency of alkaline earth metals during life by the dynamical surface emissioncenter model.
然而超额钡仍然是发射电子的泉源，可以通过动态表面发射中心模型而与寿命中碱土金属下降统一起来。
2
The Remote inspection system includes sewage disposal inspection center of the Environmental Protection Department and sewage disposal system of sewage Emission Unit.
污水处理远程监测系统由环保部门的污水处理监测中心和污水排放单位的污水处理系统两个部分组成。
3
Due to the quantum size effect, semiconductor quantum dot nanocrystals can be used to adjust the wavelength of the luminescence center for broadband infrared emission.