Uranium in groundwater occurred over a wide range of pH and redox conditions because of its association with other compounds.
地下水中含有的铀不在酸碱值和氧化条件之内，是因为其常与其它化合物相连。
The chemical base for the bisulfite can be ionic calcium, magnesium, sodium or ammonium, Sulfite pulping can be carried out over a wide range of PH.
亚硫酸氢盐里的钙离子，镁离子，钠离子，铵根离子等化学基可以电离。
She found that the range of responses was wide, with some seeming to prefer the lowered pH.
她发现这种应对反应是多种多样的，甚至有部分生物似乎很喜欢降低后的PH值。
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