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ÈçÏÂ: The given interpretation shows that the author do not understand what kind of surface they measure. It is reasonably external surface of the substance particles. It follows from its size (rather low), pore volume and the pore diameter. The difference in surface between (1) and (1') is also evidenced that it is external surface. There are no pores with diameter of 7 or 3.5 nm in the crystal structure ²»ÖªµÀÊÇʲôÒâ˼ ллÁË |
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