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- Pollution levels fall during nightime. 夜晚的污染程度则会下降。
- Rainwater with light pollution level is easy to purify. 雨水作为一种自然资源,污染轻,处理容易。
- They make regular checks on the surrounding area for pollution levels. 他们对周围地区的污染水平进行定期检测。
- Thankfully, the air pollution levels were not especially bad yesterday. 幸好昨天的空气污染水平不是特别严重。
- Studies on dynamics of microcystin pollution level in municipal water supplies. 城市供水藻毒素污染水平的动态研究。
- Insulator's pollution level: Normal class is 0, anti-pollution is III level. 绝缘子污秽等级:普通级为0级;防污型为III级;
- Many laws require that pollution levels not exceed those found to be harmful to people. 许多法律要求污染水平不能超过那些已经发现了的对人们造成危害的水平。
- The amount of sickness in this district demonstrates that the water pollution levels are too high. 这地区疾病之多说明这里水污染太严重了。
- POllution levels tend to be at their lowest during spring and autumn when winds are freshest. 春秋天时候,风带来新鲜清新的空气。因此,污染程度也最低。
- The pollution levels of OCPs and PCBs in the soil were measured by gas chromatography and(GCMS). 采用气相色谱和GCMS法对青岛地区土壤中的有机氯农药和多氯联苯的污染现状进行了研究。
- Farmers are reducing their use of chemical fertilisers to improve pollution levels. 农民们正在减少化肥的使用量以降低污染水平。
- Is the water polluted at source or further downstream? 河水是在源头还是在流出之後受到污染的?
- Compared with the previous year,the order of the pollution level remained same and the pollution extent is quite close. 与上年相比,污染轻重顺序未变,污染程度相近。
- The atmosphere of the city is very much polluted. 那个城市的空气受到严重污染。
- Polluted air hangs over the city. 城市上空被污染的空气所笼罩。
- The tanker sank and the oil polluted the sea. 油轮沉没了,石油污染了海面。
- High pollution levels often occurred in urban street canyon due to the increased traffic emissions and reduced natural ventilation. 机动车尾气排放不断增加以及城市通风能力降低,常导致城市街谷内的空气污染。
- Most rivers are polluted with filthy waste from the factory. 多数河流被该厂所排出的污秽废物所污染。
- The absorptive capacity of soil to heavy metals and its pollution levels were in the following orders:Cd>Pb>Cr>Cu>As>Zn>Ni>Mn>Fe. 土壤对重金属元素的吸附及污染程度 :Cd >Pb >Cr >Cu >As>Zn >Ni>Mn >Fe。
- Haile Gebrselassie says he will not run in the marathon at the 2008 Beijing Olympics over fears about the high pollution levels in the city. 海尔.;盖布雷西拉西耶说说自己不会参加北京奥运的马拉松比赛,因为担心这座城市严重的污染。