This paper makes a textual research on the cause, process and circulation of the writing of the inscription in order to show its important value.

该文就碑文撰写的缘起、撰写过程及流传等问题，作了必要的考证和梳理，旨在说明碑文的重要价值，使这颗中华艺术宝库中的明珠重现光彩。

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Experiments show that photo-bleaching can damage the orientation stability of polarized molecules in organic polymer and cause its second order nonlinear effect to attenuate.

实验表明光漂白能破坏有机聚合物中极化分子的取向稳定性，造成其二阶非线性效应衰减。

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Experiments show that photo-bleaching can damage the orientation stability of polarized molecules in organic polymer and cause its second order nonlinear effect to attenuate.

实验表明光漂白能破坏有机聚合物中极化分子的取向稳定性，造成其二阶非线性效应衰减。

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