by increasing the roughness of surface and changing the chemical properties of the surface, the collecting efficiency has been found to be increased by a factor of 2 - 3 and 3 -10, respectively.
实验结果表明,对于单纯依赖于物理作用的吸附,收集效率随收集材料比表面的增大而增加2-3倍;而对于能起化学作用的表面的喷附结果,收集效率有明显提高(3-10倍)。