墙面和地板上都贴着瓷砖。The walls and floors are clad with ceramic tiles.要确保这些瓷砖经过彻底灌浆并且密封好。Make sure that your tiles are thoroughly grouted and sealed.要保证每块瓷砖都和它周围的瓷砖在同一平面上。Make sure the tile is flush with the surrounding tiles....
Some Cu - Al structures used in thermal exchangers may lead to galvanic corrosion.铜铝结构热交换器存在着电偶腐蚀的倾向.The actue toxic effect of heavy metal Cu ~ ( 2 + ) to Stentor Polymorphrus ( Ciliophora, Heterotrichida ) was studied.研...