In industry, diamond can form a tough, non-corrosive coating for tools.在工业上，金刚石可以用作工具表面坚固、耐腐蚀的覆盖层。a thin coating of chocolate薄薄一层巧克力The boy spat out the pill after eating off its sugar coating.孩子吃掉药丸外面的糖,却把药吐了出来....
SB 9917 anti - weather acrylic acid polyurethane coating is two components anticorrosive coating.SB9917丙烯酸聚氨酯耐候漆是双组份、性能优良的防腐涂料.The WC - CO coating produced by electrospark deposition on alloy can effectively improve subs...