A drop in pH on the level identified in the study could have some very harmful effects.

这项研究证实，pH值水平的下降可能有一些非常有害的影响。

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A problem related to nitrification is a drop in PH for the system due to the formation of nitric acid.

和硝化作用有关的一个问题就是由于生成硝酸而使系统内的PH值降低。

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A drop in pH on the level identified in the study could have some very harmful effects. Acidic soil is paradise for nematodes, parasitic roundworms that destroy crops.

在这项研究中表明PH值的下降可以导致很多非常严重的后果，酸化土壤是那些毁坏作物的线虫和寄生蛔虫的天堂。

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There is no doubt that a pH drop is under way.

ECONOMIST: Ocean acidification

If emissions of CO2 continue to rise as forecast, there could be another drop in pH up to perhaps 0.4 units by 2100.

BBC: 'Jacuzzi vents' model CO2 future