The light catalysis makes carpet achieve the efficacy of self-clean-up.
光催化使 地毯达到自清洁的功效。
2
Today's self-cleaning materials do not have long lifetimes and more importantly are often mediocre performers when it comes to their actual ability to self-clean.
当今的自洁式材料不但寿命短，其自我清洁能力表现也堪称平庸。
3
For the forming reservoir along Three Gorges, owing to current velocity of flow of Yangtze River becoming slower, the self-clean capacity of the water body would be decreased obviously.