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.

為了解礦山環境中砷的自然凈化能力及其凈化機制,對興仁典型高砷煤礦區溪流水系環境進行采樣分析。

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.

本文針對興仁縣高砷廢棄煤礦區的砷污染及其自然凈化過程,分別從酸性水體中的鐵-砷自凈體系以及硫-砷自凈體系等兩個不同方向的系統展開了研究和探討,并且對前者進行了反應動力學研究。

On the natural purification of the water in offtake;

排水渠污水自然凈化研究

Discussion of Water Resources Natural Treatment and Construction of Recycle Systems

水資源自然凈化利用研究及系統構建

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

河流和溝渠對氮磷的自然凈化效果的試驗研究

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

上海濱岸帶水體自然凈化作用及其評價

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

自然凈化方式處理城市生活污水的設計方案

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

耕作層下土地自然凈化技術處理村鎮生活污水

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

凈化，自然的平衡，少女/母親/老婦及孩子/父親/智慧的三位一體。

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

近47年天山山區自然植被凈初級生產力對氣候變化的響應

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

氣候變化對新疆天山山區自然植被凈第一性生產力的影響

self - fractionating pump

自行分餾泵, 凈化泵

Reduce inflammation ,keep body clean and health.

消炎、殺菌。令身體干凈清爽，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.

全年凈增人口826萬人，自然增長率為6.45‰。

Investigation of the TWC Purification Characteristics in CNG Vehicles;

天然氣汽車三元催化器凈化特性研究

Research on Maintenance Management Optimization for Chongqing Natural Gas Purification

重慶天然氣凈化廠檢修管理優化研究

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

石寶鎮自然排水溝渠對生活污水的凈化效果及其改造強化方案探討

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

自然、文化和自然遺產: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.

如果你象大多數美國人說到購買空氣凈化、你可以自行決定購買權,然后遷出,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.

當風從山地方向刮來時，它把煙霧吹到太平洋面上，洛杉磯的空氣自然地得到了凈化。

Code for design of natural gas conditioning plant in gas field

氣田天然氣凈化廠設計規范