一种将颜料喷成雾状的喷嘴管。
虽然气凝胶被归入固体类物质，但它99%的成分是气体，这使得气凝胶拥有云雾状的外观。
Although aerogel is classed as a solid, 99% of the substance is made up of gas, which gives it a cloudy appearance.
麦克的妻子要求他做点什么来缓解他们儿子的状况。在这种压力之下，麦克想起了车间里云雾状的白色粉末。
Mike's wife asked he do something about their son's condition, under pressure Mike's mind was cast back to the clouds of white powder in the factory.
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