Fiber absorption volume altered according to the change of weight loss, consistent with the changing rule of crystallinity and crystallite size, all supporting the raised hypothesis.

纤维的吸附体积发生了改变，改变规律与结晶度和晶粒尺寸的变化规律以及扫描电镜观察结果相符，都支持文中提出的观点。

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The Y-type zeolite with optimized secondary pore structure has an relative XRD crystallinity over 70 % and a secondary pore volume of 20-80 % by total pore volume.

一种具有优化的二级孔结构的Y型沸石及其制备方法，该沸石的XRD相对结晶度在70%以上，二级孔体积占总孔体积的百分数为20 ~ 80%。

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