单词	activity coefficient
释义	activity coefficient noun : the ratio of chemical activity to actual concentration : an arbitrary quantity that in the case of solutions is a measure of the deviation of a more or less concentrated solution from an ideal solution Word History First Known Use 1911, in the meaning defined above
随便看	preparietal preparing preparing (for) preparing for prepaste prepasted prepastes prepasting prepatellar prepatent on the wrong track on the/someone's/something's way out on their best behavior on thin ice on this score on tick on time on tiptoe on tiptoes on top on top of on top of one's game on top of the world on tour on tow

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