外围护结构材料的选择，一方面，由于孔隙率的控制使其成为太阳滤波器，可以照入一些阳光，照亮入口空间，也有利于梯井内的通风。
The choice of this enclosure material responds, on the one hand, to its role as a solar filter offering at the same time porosity, light entrance and ventilation to the elevator case.
铜离子在吸附量由低到高的过程，首先聚集在孔隙入口处，再逐渐填满孔隙内部空间。
The ions gather in the pore entrance at the start of the adsorption process. Then the ions move into the inner pores and gradually fill the pore space.
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