Dowling said that a chemical substance in order to state the existence of nanoparticles can have different characteristics. 道林说，一种化学物质以纳米粒子状态存在时可以有不同的特性。
Dowling points out that excess ink is recirculated within the sealed system, reducing consumption and contamination from lint, dust or dampener fluid. 道林指出，过剩的墨水循环的封闭系统，减少消耗和污染皮棉，尘埃或沮丧液。
