Use steel brush or burnisher to clean dust and weathered layer on the surface of concrete;
用刚刷或角磨机去除混凝土表面的浮尘和风化层;
Use steel brush or burnisher to clean dust and weathered layer on the surface of concrete;
用刚刷或角磨机去除混凝土表面的浮尘和风化层;
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