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In contaminated water, the high toxicity element arsenic is one of the contaminants prior to control, thus arsenic pollution in drinking water and how to remove arsenate from water have attracted much attention.

中文摘要：砷是高毒元素，是水体中优先控制的污染物之一，因此饮用水中砷的污染及其去除方法成为环境领域研究的热门话题。

The upside in the coping of reative cell and flank sets aspersion shower nozzle, time, aspersion of surface of grey grain of mensurable Xiang Shi, make the surface of limestone covers film of a thin water, when flue gas has spread every reative cell, the SO2 in flue gas and the limestone grain that covering water film undertake osculatory, in entering water film through diffusing, with limestone happening chemistry reacts, 80% above are the by-product that reaction produces gesso crystal.

反应室的顶部和侧面中上部设有洒水喷头，定时，定量向石灰颗粒表面洒水，使石灰石的表面覆盖一层薄水膜，当烟气流过每个反应室时，烟气中的SO2和覆盖着水膜的石灰石颗粒进行接触，通过扩散进入水膜中和石灰石发生化学反应，反应产生的副产物80%以上为石膏晶体。

If a water run vacuum aspirator is used, irregularities in the water flow may cause a backflow of air or water into the vacuum flask, introducing contaminants to the filtrate.

如果水运行外太空使用中的不正常现象水流可能会导致回流的空气或水进入保温瓶介绍污染物的滤液。

In order to realize reasonable dispatching of water resources, some key questions are studied, such as operation method for multi-year reservoir, the associated operation of surface water and ground water, and as a result, the reasonable and feasible disposal measures are put forward.

叶河流域是一复杂水资源系统，既要考虑整个系统的灌溉和生态用水，又要兼顾27座电站的电力补偿，为了对水资源进行合理调配，对其中的关键问题如：多年调节水库计算方法、地表水与地下水的联合调节等问题进行了研究，提出了理论上合理、操作上可行的处理方法。

For example, the Government of Singapore Aerospace Astros water technology, used to speed up the construction of new water, waste water to filter impurities, the use of reverse osmosis to eliminate organic matter.

新加坡政府还加快了水再循环为食用水技术的开发利用，并制定了实施的具体计划。

Through high-pressure water pump and special nozzle to spray water at high speed from up to down to atomize water to form fan-shaped "silver screen", the movie is displayed on the atomized screen.

水幕电影是通过高压水泵和特制的喷头将水自下而上高速喷出，使水雾化，形成扇形的"银幕"，影片就是在雾化后的银幕上呈像的。

Constant pressure water supply is a very important link in automatic monitoring system of water works. Because of the uncertainty of using water, the system is quite time-variant, non-linear, time-delay.

恒压供水压力控制系统是水厂自动监控系统中一个非常重要的环节，由于用户用水量的不确定性，因此它具有较大的时变性、非线性和时滞性。

The technology is appiled to not only the treatment of organic industry waste water, but also pretreatment of city water supply source that is polluted , and it is the perfect biology filtering material that deal with matter of azote and phosphor in water.

该技术既适应于有机工业污水的处理，也适应于受到污染的城市供水源的预处理，是处理水中氮磷物质最理想的生物滤料。

The percentage of Cyanide, phenol, mercury and chromium which have little effect on water quality is small and the variation tendency is slow. The percentage of Ammoniac azote, TP, TN, Cd, potassium permanganate index and fluoride which have much effect on water quality is big and the variation tendency is great. The percentage of DO, BOD5, petrochemical compounds and lead lies in the mean place between two guidelines above, which plays a normal role in contributing to the water quality of Yuehai, but the variation tendency is obvious.

选取了15个参数作为评价因素，其中，氰化物、挥发酚、汞、六价铬等指标的权重较小，对水质变化的总体影响不大，并且年度变化趋势较平缓；氨氮、总磷、总氮、镉、高锰酸盐指数以及氟化物等指标在阅海湿地水质总体评价中所占比重较大，直接影响水道水质；DO、BOD5、石油类、铅等指标的权重介于上述指标的中间。

My baby milk or water from the beginning, is to use a bottle, one-year-old when he tried to used glass, but he only used to play, do not have to milk or water, then did not give him a cup of water, I recently heard that the regular use of baby bottle tooth development impact, I was very worried that it is really true?

我家宝宝从开始喝奶或水，都是用奶瓶，一岁的时候试着给他用过水杯，但是他只用来玩，根本不用来喝奶或水，后来就没再给他用水杯，最近我听别人说经常用奶瓶对宝宝的牙齿发育有影响，我心里非常担心，真的是这样吗？

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。