And simultaneously, the doping ions, to a certain extent, can restrain the surface plasmon resonance absorption and minish the size of Ag nanoparticles. 在光吸收性能方面，镧和铝的引入都会在一定程度上抑制银粒子的表面等离子共振吸收，同时细化银纳米粒子。
Then, the sound reflection and absorption characteristics of the micro-perforated structure in the newly-built amphitheatre are investigated. 同时，分析了这种微穿孔吸声反射板结构在阶梯教室中的声反射和声吸收性能。
