Study the biomass impact on water improvement effect by different kinds of submerged macrophytes. The results interpreted from the experiments provide the reference to project.
研究生物量对不同沉水植物水质改善效应的影响，从试验得出生物量的影响结果，为工程应用提供参考；
The rate of coverage of forest have an evident effect on many environment factors such as soil and water reservation ecological environment improvement.
森林覆被率在保持水土、涵养水源、改善生态环境方面起着很大作用。
Objective To explore the effect of water improvement and the sanitary protection of water sources in Linyi City.
目的了解临沂市改水效果及水源的卫生防护状况。
With the background of Wuhan water project, this paper appraised the improvement effect of water environment using the relative theory of green GDP.
在此，以国家“十五”重大科技水专项分课题武汉水专项的实施为背景，在绿色GDP核算框架下对水环境治理效益进行了评价。
The utility model has the characteristics of simple laying, grass survival rate improvement, large earth storage amount, good drainage effect and high conservation of water resources.
本实用新型铺设简单，它具有提高植草成活率、储土量大、排水效果好、涵养率高的特点。
Objective To understand the effect of water improvement in endemic fluorosis area on caries in school boys and girls.
目的了解地方性氟中毒病区改水降氟对中、小学生龋患影响。
The charcoal filling has tenuity effect in the improvement of water quality were only by its absorption and interception function.
3仅靠木炭填料吸附、截留作用去除水体污染物能力有限。
The charcoal filling has tenuity effect in the improvement of water quality were only by its absorption and interception function.
3仅靠木炭填料吸附、截留作用去除水体污染物能力有限。
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