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。
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。
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。
However, when the PH rises to a certain value, the degradation rate of aniline will drop.
但当pH值升到一定程度以后，去除率又有所下降。
A cationic adhesive-type natamycin nanometer eye drop comprises natamycin, a proper amount of osmoregulator and pH regulator.
一种阳离子黏附型那他霉素纳米滴眼液。
A cationic adhesive-type natamycin nanometer eye drop comprises natamycin, a proper amount of osmoregulator and pH regulator.
一种阳离子黏附型那他霉素纳米滴眼液。
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