This increases its efficiency as a virus-killing material.
这增加了作为一个杀毒材料的效率。
2
The relationship between Killing zone boundary and defense efficiency is expounded from the point of view of covering protected object capability by air-defense missile and its shift of fire.
从地空导弹对所保卫目标的掩护能力、火力转移能力等方面，论述杀伤区远界与防卫效率的关系。
3
Methods: Using as the method of falling down naturally to compare the efficiency of killing bacteria and molds in indoor air with 84-aerosol.