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Ph

['pi'etʃ]

解釋/意思:

(noun.) (from potential of Hydrogen) the logarithm of the reciprocal of hydrogen-ion concentration in gram atoms per liter; provides a measure on a scale from 0 to 14 of the acidity or alkalinity of a solution (where 7 is neutral and greater than 7 is more basic and less than 7 is more acidic);.

整理:谢尔登--From WordNet

例句/造句/用法:

整理:塞丽娜

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