打底层

通过改变等离子清洗工艺参数、沉积负偏压和打底层，优化类石墨镀层在铝合金基体上的性能。

The GLC coatings were deposited on aluminum alloy by changing plasma cleaning parameter , the deposited bias voltage and different adhesions .

用等离子喷涂方法在基体上直接制备陶瓷层时，基体被烧坏，因此，应首先喷涂一层打底层。

When Al2O3 composite ceramic was plasma sprayed directly on the substrate , the substrate was burned out . So a bond coat should be produced on the substrate firstly .

无死角的聚光灯从最顶层的政客办公室打到最底层的走私贩和妓女，成就了这部独一无二的道德伦理大戏，几百万人命悬一线，而事件所涉人物的真实面孔令人唏嘘。

It 's this wide-ranging spotlight , drifting from the highest levels of political office down to lowly bootleggers and prostitutes , that makes the show something special , offering up morality plays that hold the lives of millions at stake , while putting an actual face on those being affected . 19 .