Metadata
Author: ParaCrawl Corpus
Data
English[en]
Because of stone material itself has wool stoma and water imbibition, air pollution, dust and acid gas in the air, vehicle exhaust, etc., accumulate over a long period to attached to the stone material surface, when it rains, will accelerate the pollution of acid rain erosion of stone material and adsorption in stone wool stoma, cause not easy cleaning blotch, especially for the fire stone, the faster of the pollution, and it is not easy to wash, the use of commercially available cleaning agents can not only remove the pollution; If smooth stone, the luster eroded away soon.
Chinese[zh]
由于石材本身具有毛细孔及吸水性,空气污染,灰尘加上空气中的酸气,汽机车的废气等,日积月累地附着于石材表面,当下雨的时候,酸雨会加速这些污染对石材的侵蚀且吸附在石材的毛细孔内,造成不易清洗的污斑,尤其对于火烧面的石材来说,这些污染形成的速度更快,且不容易清洗,仅使用市售的清洗剂根本无法去除这些污染;若是光面的石材,这些光泽很快就被侵蚀掉。