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Terms for subject Earth sciences containing Ph | all forms | exact matches only
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hydrogen-ion exponent pH氢离子浓度指数
hydrogen-ion exponent pH值
pH recording controllerpH 值记录控制器
potential of hydrogen pH值氢离子浓度倒数的对数
power of hydrogen indictor pH酸碱度指示器
power of hydrogen indictor pH值指示器

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