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xfgzju

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The fact is that Ca2+ can be measured may be that hydrophobic hybrid sol don¡¯t not completely block stone holes, therfore acid rain can corrode stone through the pores of the stone.

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The reason that Ca 2+ can be measured might be that the the hydrophobic hybrid sol can't block the stone holes completely, making it vulnerable to the acid rain.
3Â¥2013-06-22 21:18:14
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xfgzju: ½ð±Ò+15, ·­ÒëEPI+1 2013-06-22 21:45:21
It is a fact that Ca+2 could be measured possibly due to the incomplete blocking of hydrophobic sol-gel composite on stone holes which allows the acid rain leading a corrosion  on stones through entering the pores of those.
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2Â¥2013-06-20 22:42:57
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