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由 John 的阶梯形吸附等温线图,可清楚地看出,碳表面的均匀度随加热而增大。随着均匀度的增大,两条相邻温度下的吸附等温线的交点所对应的压力将移向单分子层吸附等温线的交点所对应的较低的相对压力。
It is clear from John’s ladder-type adsorption isotherm that the uniformity of the carbon surface increases with heating. As the uniformity increases, the pressure at the intersection of the adsorption isotherms at two adjacent temperatures will shift to the lower relative pressure at the point of intersection of the monolayer adsorption isotherms.