您要查找的是不是：
- 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。
- Evaluating the major factors for pollution level, and introducing to the characteristics and control technologies of pollutants. 各别探讨主要影响污染程度之因素;并介绍污染物的特性与控制方法.
- 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；
- Pollution levels fall during nightime. 夜晚的污染程度则会下降。
- 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。
- It shownthat the pollution level of Fen-river Taiyuan section was strong medium and Jinyang lake wasslight. 结果表明：汾河太原段的水质基本属于强中污染，晋阳湖水质属轻污染。
- The organic pollution level is as follows(from high to low): Dasha River,campus pond,reservoir A,and reservoir B. 有机污染的程度由高到低依次为:大沙河、校园池塘、甲水库、乙水库。
- 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 total creepage distance of an insulator shall be not less creepage distance requested by the pollution level for the site. 绝缘子总的爬距应等于或大于由该地区污秽等级所要求的爬距。
- The result showed that phytoplankton,bacteria,ammonia nitrogen and nitrite nitrogen have different pollution level in different water. 通过分析，浮游植物、细菌、非离子氨和亚硝酸盐氮等因子在不同的水体中表现出不同程度的污染。
- Radioactive monitoring results in river receiving waste of uraniumelement plant are reported.The pollution level and monitoring method are discussed. 本文报告了铀元件厂排污河流的放射性监测结果，并就污染水平和监测方法进行讨论。
- PP membrane, PVDF membrane and ceramic membrane are compared in air permeability, mass transfer coefficient, pollution level and price. 从膜的透气量、传质系数、膜污染程度和价格四方面,对聚丙烯(PP)、聚偏氟乙烯(PVDF)和陶瓷三种常用微孔膜的性能进行了比较和评估。
- 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。
- Since a chief source of pollutants is automobile emissions, it might be expected that pollutant levels could be correlated with automobile traffic, at least to some extent. 因为污染物的主要来源是汽车的排出物，所以可以料想污染物的浓度至少在某种程度上是与汽车运输有关。
- I'd like a room on the upper level. 我想要楼上的房间。
- Introducing pollution with disutility to utility function in a stochastic economic growth rate and pollution level by using stochastic optimization method. 摘要在一个具有随机污染消除技术的随机增长模型中，把带来负效用的污染引入效用函数。
- We need a mechanical digger to level the ground. 我们需要一台挖掘机来平整土地。
- I hope you'll be on the level with me. 我希望你对我坦率布公。
