编辑同志: 教材中关于雾的形成和云的形成是这样讲的:“从地面到高空气温逐渐降低,空气中的水蒸气受冷会结成许多的小水点或小冰晶,聚集在一起飘浮在空气中,在低空的是雾,在高空的是云。”从字面上去理解好像是说雾可能是小水点也可能是小冰晶,也就是说它形成的温度可能在0℃以上也可能在0℃以下。但是我在另一资料中看到这样一段话:冬天的早晨,当你走出家门时,有时会看到大街上被“白气”笼罩着,使你看不清房屋和东西,有时连离你很近的物体也看不清了,这些 Editor comrades: textbooks on the formation of fog and the formation of clouds is like this: “From the ground to high temperatures gradually reduce the temperature, the water vapor in the air will be formed by a small number of cold water or ice crystals, gathered together floating In the air, the fog at low altitude and the cloud at high altitude. ”To understand literally it seems that the fog may be a small water point or a small ice crystal, meaning that the temperature it forms may be above 0 ° C Below 0 ℃. But in another source, I read the passage: In the winter morning, when you get out of your house, you sometimes see the street covered in “white gas” that keeps you from seeing houses and things, sometimes even leaving you Very close to the object can not see, these