单词 | active mass |
释义 | active massnoun Chemistry.the effective concentration of a substance. Origin of active massFirst recorded in 1905–10 Words nearby active massactive hyperemia, active immunity, active layer, active list, active margin, active mass, active-matrix, active methyl, active optics, active principle, active reason Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 |
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