查询词典 polluted water

As the results show: The two submerged macrophytes can also adapt to the polluted water. Under the condition of high nitrogen in the sediment, they can remove the nitrogen effectively, and the removal effect of Ceratophyllum demersum L.is better than Hydrilla verticillata Royle. Hydrilla verticillata Royle activates the TP in the sediment more effectively than Ceratophyllum demersum L.. The submerged macrophytes can intensify the removal effect of turbidity. But the CODMn removal effect of submerged macrophytes are not obvious.

结果表明：生长晚期的黑藻和金鱼藻仍可适应污染河水；在底泥含氮量较高的情况下，生长晚期的沉水植物对氮素具有明显的去除效果，且金鱼藻的脱氮能力高于黑藻；黑藻对底泥中TP的活化能力高于金鱼藻；沉水植物可以强化浊度的净化效果；沉水植物生长晚期对CODMn的去除效果不高。

The excrement and the excrement polluted water carry a lot of pathogens of them, including the diseaseful virus and worm eggs, which threaten seriously the health of the habitants.

粪便中和被粪便污染的饮用水中，含有多种肠道传染病和寄生虫病的病原体，包括致病的病毒和虫卵，严重威胁农民的身体健康。

By imitating different concentration of Cd2+ Cu2+ Cr3+ Cr6+and Zn2+polluted water environment,we mainly studied their toxic effects on aquatic piants by means of measurement of physiologicai indexes and electron microscopy observation as well as the relieving to Cu2+ injury of antioxidase enzyme system in Lemna minor L. and Vallisneria asiatica Miki in this paper by throwing Ce.the experimental results showed that Cd2+ Cu2+ Cr3+ Cr6+ and Zn2+ might injure photosynthetic systems, protective enzyme system, substance metabolism systems and cell ultrastructure of the plant.

本文通过模拟不同浓度梯度的重金属Cd~(2+)、Cu~(2+)、Cr~(3+)、Cr~(6+)和Zn~(2+)污染环境，利用生理生化测定、扫描电镜、透射电镜、气相色谱及激光共聚焦等实验手段，研究了四种金属离子对不同生态型的水生植物的毒害影响，初步探索了Ce对浮萍Cu害的缓解效应和La、Zn及其交互作用对浮萍活性氧清除系统影响。

Diversity of incidence rate of Leptospirosis in natural population was due to time and freqency difference exposed to Leptospira polluted water.

人群发病构成的差异，主要是由于接触钩体病疫水的次数多少、时间长短和频率高低所致，并提出了针对性预防措施。

A strain,which can use methylparathion,and its degradation substrate ρ-nitrophenol as source of carbon,was isolated from polluted water pool of Huayang Pesticide Plant.

从生产甲基对硫磷的华阳农药厂污水曝气池中，分离到1株能以甲基对硫磷及其降解中间产物对硝基苯酚为唯一碳源生长，且能够将其彻底降解为CO2和H2O的细菌L-W，经鉴定，为节杆菌属。

For the polluted water with less than 5.0 mg/L of TP and less than 34.0mg/L of NH4(superscript +)-N, four algal species films all have favorable performance to remove nitrogen and phosphorus, and Scenedesmus has the best performance to remove phosphorus and ammonia.

对TP质量浓度小于5.0 mg？L^(-1)，NH4-N质量浓度小于34.0 mg？L^(-1)的污染水体，四种藻膜都有良好的去除氮磷能力，其中栅裂藻去除TP、NH4-N的能力最强。

People who let the polluted water and exhaust gas out unbendingly should be punished severely.

环境不可能恢复成从前的样子，也不可能按照人类的意愿发展。

The results prove that the unhairing of two protease preparations can replace traditional unhairing by alkaline sulfide material for the purpose to reduce harm on the epidermis and polluted water in the process of production.

试验证明，用酶制剂脱毛效果良好，完全可以替代传统的硫化碱，同时能够改善制革工艺，削弱碱性物质对皮革表面的侵害，减少制革业对水源污染。

She collects samples of the polluted water - but she knows it is evidence that will continue to be ignored.

她抽取样本的污染水，但她也知道，这是证据，将继续被忽视。

In the paper,the prevention and control of adverse impacts on the environment induced by such factors as dust,exhausted air,noise,polluted water and waste mucks are presented,with the emphasis being placed on the expatiation on the protection plan for the air environment inside tunnels and on the principle and methods of the air measurement system.

介绍了铁路隧道施工中对环境造成影响的各项因素，主要针对隧道的粉尘、废气、噪音、污水、废碴的防治进行了全面阐述，并重点阐述了隧道内空气环境的保护方案以及空气检测系统的原理和方案，可供隧道工程及环保工作人员参考。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。