范文编号:DZXX233 范文字数:15611,页数:45 摘要 水是人类赖以生存和发展的重要资源之一,是不可缺少、不可代替的特殊资源。没有水就没有生命,就没有文明的进步、经济的发展和社会的稳定。世界上的水资源是有限的,经济和社会的发展必须与水的供应相适应,不能无限制地采水用水,不能超越水资源的承载能力。当今世界,随着人口的不断增长和经济的不断发展,淡水资源的需求量不断增加;同时,由于不合理的利用,本来短缺的淡水资源日益紧张。 ABSTRACT Water is a human survival and development of important resources.Isindispensable,irreplaceable special resources.There is no life,the progress of civilization,the development of economy and the stability of society without water.Water can not be used unlimited and exceeded the capacity of water resources which are limited.the development of economy and society must be adapted to the provison of water.Nowdays.with the growing population and developing economy,freshwater resources are increcing demanded;At the same time.shortage of freshwater resources have become increasingly tense as a result of unreasonable using. Keywords: single-chip computer, Contactless Technology, saving-water. 摘要 I 开水房流量控制器的设计与实现相关范文 |
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