单词：airflow sprayer
气流喷雾机
单词：airflow sprayer 相关文章
It's tough to be a machine in the desert. Particles of dirty sands walk their way in to moving parts where they break turbine's motors pipes on other equipment.To avoid the costly warranty, researches are taking lessons from a desert native, the yell
发表于:2019-01-08 / 阅读(318) / 评论(0)
Scientific American(二)月
Scientific American(二)月
Once stimulated, these muscles go to work and cause us to forcefully expel air from the mouth and nose. Or, in other words, we sneeze. Because the nose lining tends to swell when we lie down, making it even more sensitive to sneeze-causing particles,
发表于:2019-02-23 / 阅读(506) / 评论(0)
英语时差8，16
英语时差8，16