Guidance is particularly needed because fluoride is found in all natural waters at some concentration.
对这一问题尤其需要加以指导，因为在所有天然水中都可发现达到某一浓度的氟化物。
Phosphorus is one of the essential elements for biological growth. The contents of phosphorus increased gradually in natural waters due to human influences.
磷是生物生长所必须的元素之一，由于人类活动的影响，天然水体中的磷含量逐渐增加。
Selective extraction technology is employed to study the separation of manganese oxides and iron oxides in biofilms sampled from natural waters and reviews its applicability.
采用选择性萃取分离技术对自然水体采集的生物膜上铁、锰氧化物进行萃取分离研究，考察该技术的适用性。
It shows that selective extraction technology can be applied broadly to the extraction and separation of manganese oxides and iron oxides in biofilms sampled from natural waters.
这说明选择性萃取技术可以广泛应用于自然水体采集的生物膜上铁、锰氧化物的萃取分离。
This paper presents a computer simulation to investigate the speciation of aluminum in acidic natural waters equilibria with mineral kaolinite based on the chemical equilibrium calculation.
基于热力学平衡计算，用计算机模拟研究了与高岭石固相平衡的酸性天然地表水中铝的形态分布，讨论了影响铝形态分布的各种因素。
Objective To understand the survival time of Leptospira Interrogans in different type of natural waters, and the disinfection effect of chlorine-containing disinfectant and its affecting factors.
目的了解钩端螺旋体在不同自然水体中的存活时间，并研究含氯消毒剂杀灭钩体及其影响因素。
It shows how people lived at the time is also of great interest to natural scientists because the waters around it are so shallow.
它向人们展示了在那个时代人们是怎样的生活，而且自然科学家对它也十分地感兴趣，因为它周围的水域很浅。
It not only shows how people lived at the time is also of great interest to natural scientists because the waters around it are so shallow.
它不仅向人们展示了在那个时代人们是怎样的生活而且自然科学家对它也十分地感兴趣，因为它周围的水域很浅。
Clark, director of the bioacoustics research program at Cornell University, the area over which whales in coastal waters can hear one another shrinks to only 10 to 20 percent of its natural extent.
克拉克——康内尔大学生物听力研究项目主管说，近岸海水的鲸鱼出没区域能听到自然范围内仅仅10%到20%的收缩声。
The ownership of the islands — in waters rich with fish and oil and natural gas deposits — has been disputed for decades.
这个周围富含鱼类资源、石油和天然气的岛屿的所有权的争议已经持续了好几十年。
Frigates and armed steamers crowded the nearby waters known as Hampton Roads, one of the world's great natural harbors.
护卫舰和武装蒸汽船在叫做HamptonRoads的水域中聚集，这也是全球最好的天然港湾之一。
Starting with the Dead sea itself, a one-of-a-kind body of water, 417 meters (1, 373 ft.) below sea level with mineral-rich waters and mud flow with natural health and beauty acclaimed globally.
死海本身拥有独一无二的水域、417米(1373)低于海平面，矿产丰富，水泥浆流入，是世界著名的天然保健美容好去处。
The clash over territorial waters and islands — and the natural resources.
围绕领海和岛屿以及与之相关的自然资源的冲突是亚太地区的一个焦点。
At stake in the conflicting claims: national pride and potentially lucrative natural gas drilling rights in waters around them.
正如双方所主张的那样，这场争端，事关国家荣誉以及周围海域潜藏丰富的天然气的开采权。
With few natural predators, they have been rapidly expanding in Caribbean and Atlantic waters, voraciously preying on local fish, shrimp and crab populations across the region.
狮子鱼的天敌极少，主要以小鱼、虾和螃蟹味主食，它们在加勒比海和大西洋海域迅速繁殖起来。
On the way home he dropped in on Spain's leaders just as Repsol, a Spanish company, announced the discovery of a big natural-gas field in Venezuelan waters.
在回程途中，他顺道拜访了西班牙领导人，当时西班牙石油公司Repsol刚宣布在委内瑞拉水域发现大型天然气油田。
With mountains on all sides, the county is a natural basin for waters running down the mountains.
由于四面环山，该县是一个天然盆地，山上的水自上而下汇入这个盆地。
That abuse has accelerated pollution of waters, food and the natural world. The result of such irresponsible behavior is disease and death among people and animals, especially wildlife.
权力的滥用加速了水、食物与自然界的污染。这种不负责任的行为的结果在民众与动物中，特别野生动物中，造成疾病与死亡。
Product features: fine and rich textures, clear and natural, like flowing clouds and waters, with continuous grains in overall application.
产品特点：纹理饱满细腻，清晰自然，宛如行云流水，整体铺贴，纹路可延续。
The aesthetic objects and contents of the landscape poetry are mainly the natural mountains and waters and have various forms of aesthetic patterns.
山水诗的审美对象和内容主要是自然山水，具有多种多样的审美形态。
The natural flowing waters shall be reasonably distributed among the neighboring obligees of immovables.
对自然流水的利用，应当在不动产的相邻权利人之间合理分配。
The vast area of waters, dotted with partially submerged atolls and reefs, contain some of the world's busiest shipping lanes and are thought to hold large deposits of oil and natural gas.
这片面积广阔的水域，半淹的环礁和暗礁星罗棋布，世界上一些最繁忙的航道经过这里，并被认为有大量的石油和天然气储存。
The product uses natural squalane, from the world's five "Shark field" one of the Japanese waters of the deep-sea sharks.
本品使用的是天然角鲨烷，来自于世界五大“鲨鱼场”之一日本海域的深海鲨鱼。
The product uses natural squalane, from the world's five "Shark field" one of the Japanese waters of the deep-sea sharks.
本品使用的是天然角鲨烷，来自于世界五大“鲨鱼场”之一日本海域的深海鲨鱼。
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