self-purification

In order to understand the natural attenuation of arsenic and its mechanisms in the mining environment,water and sediment samples collected from the stream system of a high-arsenic coal mining area in Xingren County were analyzed.

为了解矿山环境中砷的自然净化能力及其净化机制,对兴仁典型高砷煤矿区溪流水系环境进行采样分析。

Aimed at arsenic pollution and the natural attenuated of arsenic in the High-Arsenic coal mining area in Xingren,the paper discusses iron-arsenic natural attenuation system and sulfur-arsnic natural attenuation system in the acidic water,respectively,and discusses the process of iron-arsenic natural attenuation system by chemical kinetics.

本文针对兴仁县高砷废弃煤矿区的砷污染及其自然净化过程,分别从酸性水体中的铁-砷自净体系以及硫-砷自净体系等两个不同方向的系统展开了研究和探讨,并且对前者进行了反应动力学研究。

On the natural purification of the water in offtake;

排水渠污水自然净化研究

Discussion of Water Resources Natural Treatment and Construction of Recycle Systems

水资源自然净化利用研究及系统构建

Natural Removal Effect of Nitrogen and Phosphorus in River and Ditch;

河流和沟渠对氮磷的自然净化效果的试验研究

Water Self-purification and Its Assessment of Shanghai Coastal Zone;

上海滨岸带水体自然净化作用及其评价

The Design Program of Natural Purification Methods in the Treatment of Municipal Wastewater

自然净化方式处理城市生活污水的设计方案

Treatment of Rural Domestic Sewage by Land Natural Purification Technology under Cultivation Layer

耕作层下土地自然净化技术处理村镇生活污水

Purity, natural balance, the trinity of Maid/ Mother/ Crone and son/ Father/ Wise man.

净化，自然的平衡，少女/母亲/老妇及孩子/父亲/智慧的三位一体。

Response of NPP to Climate Change over last 47 Years in Tianshan Mountain Areas

近47年天山山区自然植被净初级生产力对气候变化的响应

The effects of climate changes on the net primary productivity of natural vegetation in Tianshan Mountains

气候变化对新疆天山山区自然植被净第一性生产力的影响

self - fractionating pump

自行分馏泵, 净化泵

Reduce inflammation ,keep body clean and health.

消炎、杀菌。令身体干净清爽，健康自然。

The net growth of population in 2002 was 8.26 million, representing a natural growth rate of 6.45 per thousand.

全年净增人口826万人，自然增长率为6.45‰。

Investigation of the TWC Purification Characteristics in CNG Vehicles;

天然气汽车三元催化器净化特性研究

Research on Maintenance Management Optimization for Chongqing Natural Gas Purification

重庆天然气净化厂检修管理优化研究

The Purification and Optimize Design about Upland Natural Ditch with Urban Wastewater in Shibao Town

石宝镇自然排水沟渠对生活污水的净化效果及其改造强化方案探讨

Nature,Culture,and Natural Heritage:Toward a Culture of Nature

自然、文化和自然遗产:走向自然之文化

If you are like most other Americans, when it comes to purchasing an air purifier, you may make the decision to purchase one and then move out right out and obtain one.

如果你象大多数美国人说到购买空气净化、你可以自行决定购买权,然后迁出,并取得了一.

When the wind comes from the mountains, it blows the smog out over the ocean, and the air in Los Angeles is reasonable clear.

当风从山地方向刮来时，它把烟雾吹到太平洋面上，洛杉矶的空气自然地得到了净化。

Code for design of natural gas conditioning plant in gas field

气田天然气净化厂设计规范