水线以上部分 meaning in Chinese

topsides

As antirust paint for steel surface of ship hull in non - immersed areas and as container intermediate paint
主要用于船体水线以上部分，集装箱中间漆等钢铁表面的防锈用漆。
As antirust paints for ship hull in non - immersed areas , compatible with alkyd , phenolic and chlorinated rubber finish
主要用于船体水线以上部分的防锈用漆，可与醇酸、酚醛、氯化橡胶面漆配套使用。