surfacen.表面；外表；平面adj.表面的；肤浅的vt.在 ... 上加表层；使 ... 成平面vi.浮到水面；显露；在表面工作surface flow表面流,地表漫流

1. The surface is treated by anticathode oxidation which greatly improves the rigidity and anti-corrosion.
   表面进行阳极氧化处理，大大提高了硬度和耐腐蚀性。