yutib olish izotermasi – suyuqlik fazasida adsorblangan moddalar va modda konsentratsiyasi (yoki bosim, agar gaz bo'lsa) bilan qoplangan sirt nisbati o'rtasidagi doimiy haroratda munosabatni ko'rsatadigan egri.
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absorption isotherm –a curve showing the relationship, at a constant temperature, between the proportion of a surface covered by an adsorbed substance and the concentration of the substance (or pressure, if a gas) in the fluid phase
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