Phosphorus hydrides are formed in a H-rich, reduction environment.

磷氢化物形成于还原性的富氢环境。

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The relative enriched area of magnetic minerals may represent the favorable reduction environment of uranium deposition.

磁性矿物的相对富集区可能代表着铀沉积的理想还原环境。

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As oil-field water and deep groundwater lie in a reduction or weak reduction environment, the concentration differentiation effect of uranium is not obvious;

油田水和深层地下水由于处在还原和弱还原环境中，铀的浓度分异效应不显著；

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The Department of the Environment hopes to see an 80% reduction in bag use.

BBC: Northern Ireland's new five-pence carrier bag tax

It said it would work with Thames Water and the Environment Agency to review the effectiveness of flood risk reduction measures.

BBC: Flooding affects Reading houses despite new defences

At issue is the sale by Hungary's Ministry of Environment and Water of 800, 000 certified emission-reduction credits (CERs).

ECONOMIST: Carbon markets