Substances such as urea (a leftover from protein metabolism) and excess phosphate ions therefore flow from the blood to the water.
这样，诸如尿素（蛋白质新陈代谢所留下的残余物质）和多余的磷酸盐离子等物质便从血液转移到水中。
To study the flow injection analysis method to determine urea in the water of swimming pools.
目的研究流动注射分析法测定游泳池水中尿素的方法。
The process flow sheet, technological Characteristics and usage of UTI urea process are briefly introduced. Its superiority is described in this paper.
简单介绍了UTI工艺的流程、技术特点及应用情况，并指出它是一种较为先进的尿素生产工艺。
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