tell how water cycles 讲一讲水是怎样循环的
On the other hand,the impact of human activities on water cycle and water resources is also an important reason.
递减原因除降水量减少因素外,人类活动对水循环及水资源影响也是一个重要原因。
参考来源 - 变化环境下海河流域水文循环及时空演化规律分析—《南水北调与水利科技》—2010年第3期—龙源期刊网The wetland degradation reason is supposed by analyzing the change trend of the region climate and water cycle factors.
本研究通过分析气象因子与水循环要素变化趋势，解释了湿地退化的原因。
参考来源 - 沼泽湿地生态环境及水循环评价研究The rainfall plays a very important role in the water cycle Only when the rainfall is greater than 10mm.
但是<5mm的降雨量基本不能被沙区植被所利用,只有当降雨量大于10mm时,才能在沙地近地表水分循环中起到非常重要的作用。
参考来源 - 盐池沙地水分动态与干沙层形成规律研究In this paper, which is supported by the preliminary designing of methanol equipment(200,000t/a) in Weihe River Coal Chemical Industry Group Co. , Ltd and the actual operation data, the water cycle of Methanol Synthesis system was studied.
本文依托陕西某化肥厂年产20万t/a甲醇初步设计,以陕西某化肥厂实际操作数据为基础,对合成甲醇系统中的水体循环进行了一定的研究。
参考来源 - 煤基大甲醇系统水循环行为研究·2,447,543篇论文数据，部分数据来源于NoteExpress
以上来源于: WordNet
N the circulation of the earth's water, in which water evaporates from the sea into the atmosphere, where it condenses and falls as rain or snow, returning to the sea by rivers or returning to the atmosphere by evapotranspiration 水文循环 (Also called hydrologic cycle)
Yet most relate to forests' role in the carbon and water cycles and in safeguarding biodiversity.
大多数仍和森林在低碳，水循环和保护生态平衡中的角色相关。
The prediction of soil moisture is significant to the research on agricultural production and water cycles.
土壤墒情预测预报对农业生产、水分循环的研究具有重要的意义。
Widespread overgrazing disturbs water cycles, reducing replenishment of above and below ground water resources.
大面积过度放牧扰乱了水循环、减少了地表和地下水资源的补充。
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