查询词典 pollution

Direct catalytic decomposition of NO to N2 and O2 has been recognized as the most attractive method for eliminating pollution derived from NO, since it does not require the addition of any reductant, without causing secondary pollution, and the process it concerned is simple and economical.

氮氧化物NO(下标 x的直接催化分解是公认的消除NO污染最有吸引力的方法。

If air pollution chokes a city, a direct approach might be to limit the use of cars or require industry to adopt pollution control instruments.

如果空气污染使整个城市感到窒息，那么直接的方法就可能是限制车辆的使用，或是要求企业采用控制污染的仪器。

The version that people responded to the best talked about "air pollution" rather than "climate change"– because pollution is something visible that they could relate to, with strong connotations of dirtiness and poor health.

人们反响最好的版本用了"大气污染"而不是"天气变化"——因为污染是人们相关的可见的东西，有很强的肮脏和不健康的意思。

Marine oil pollution is disasterous, resulting in the loss of petroleum, the pollution of marine environment and destructive effects on the ecological system.

海上石油污染危害严重。它不仅损失石油污染了海洋，而且它还危害沿岸居民，破坏生态平衡。从而监测和清除技术的研究成了热门科学。

But the water pollution in Suzhou is very disproportional with its image both home and abroad. It is very necessary and urgent to protect the water resources, to treat the water pollution and to improve the water environment.

但是，苏州的水环境问题与苏州在国内外的形象极不相称，保护水资源、治理水污染、改善水环境十分必要而紧迫。

For discussing and evaluating the possibal contribution to atmospheric pollution in the process of utilizing mineral resources,the pollution characteristics and sources of Cu element in the dustfall were evaluated in the typical mining city-Tongling.

为了探讨和评价矿产资源利用过程对大气污染的可能贡献，评价了典型有色金属矿山城市--铜陵市的大气降尘中铜元素的污染状况及其来源。

The main causes of the pollution identified result from the irregation of using the polluted water from industries and the endogenic pollution of F and Hg elements is mainly caused by...

造成污染的主要原因是工业三废中的污水长期被利用灌溉，同时查明活动断裂是F、Hg等元素的内生污染源。

So it is more imported to control input from out system then control input from everglad circumjacent area, viewed from strategically control contaminations in everglade of Dongting Lake. Control area pollution was more import then control point pollution.

因此，在洞庭湖湿地水污染的治理上，控制系统外水系输入比控制湿地周边更重要，控制面源污染比点源污染更重要。

It is an entirely new project for MSA to strengthen the control of preventing environmental pollution caused by ship repairing in floating dock s,and minimizing the risk of pollution effectively.

文中针对修船浮船坞作业存在的污染水域风险，在综合分析评判两起海损事故船浮船坞作业防污染措施得与失的基础上，分析原因、总结经验、寻找依据，提出了相应的管理对策措施和建议。

In order to get the relationship between mental pollution in soil and vegetables and support green vegetable production, five kinds of common foliage vegetables(Lettuce Plant, Schizonepeta Tenuifolia Briq, Lpomoea aquelica, lettuce, Amaranthus hypochondriacus) were taken as experimental materials to study the correlation between the polluted vegetables and the soil of different concentration of Cd cultivated in greenhouse. The soil pollution threshold values to produce the green vegetables were analyzed.

为探求土壤重金属污染和蔬菜污染的相关性，为绿色蔬菜生产提供技术支持，该研究以郑州市常见的5种叶菜类蔬菜(油麦菜、荆芥、蕹菜、生菜、苋菜)为试验材料，采用温室盆栽土培试验方法研究了土壤不同浓度 Cd污染与蔬菜污染的相关性，并对绿色蔬菜生产要求的土壤污染阈限值进行了分析。

Aquatic or marsh-growing fern allies; known to have existed since the Cenozoic; sometimes included in Lycopodiales.

生活于水中或湿地的蕨类；从新生代生存至今；有时归于石松目之中。

The engine was uprated from a 90hp Franklin to a 125hp Lycoming.

改良过的引擎是从90hp到125hp莱康明富兰克林。