院士谈《给水排水工程》专业
我叫李圭白，是给水排水工程学科的中国工程院院士，欢迎中学毕业生报考《给水排水工程》专业。

给水排水工程以水的社会循环为研究内容
●地球淡水的循环可区分为水的自然循环和水的社会循环
●水的自然循环－水从海洋蒸发，被气流输送到大陆，以雨、雪等降水形式落到地面，形成地表水（江、河、湖、库）和地下水，最终又流回海洋。水的自然循环及其调控是水利工程的研究内容。
●水的社会循环－人类社会为满足人们生活饮用和生产（工农业）的需要而从自然水体取水，经必要的处理以改善水质，然后输送到
Academy of Sciences on "Water Engineering"
My name is Li Gui-bai, a water supply and drainage engineering disciplines of the Chinese Academy of Engineering, welcomed the graduates to attend high school, "Water Engineering".

Water Supply and Drainage to study the water content of the social circle
● Earth's water cycle can be divided into the natural water cycle and water, social circle
● natural circulation of water - water evaporation from the ocean, was air transported to the mainland, rain, snow and other forms of precipitation fell on the ground, surface water (rivers, lakes and reservoirs) and groundwater, and eventually went back to the sea. And regulation of the natural cycle of water is the Water of the content.
● Water's social circle - of human society to meet the people's lives for drinking and production (agriculture and industry) needs water from natural water bodies, subject to necessary treatment to improve water quality, and delivery to