Etche埃奇etchv.蚀刻；铭刻；鲜明地描述；流露出etching residue腐蚀残渣etching reactor腐蚀反应器etched resistor蚀刻电阻器etch cut method腐蚀截割法etching reagrnt[机] 蚀刻剂etched amplifier印刷电路放大器etchant solution腐蚀溶液etching blanking照相腐蚀法etching solution蚀刻溶液etching material蚀刻材料

1. In this paper,the influence of orifice-induced pressure head on pit corroded piping is studied.
   研究了节流孔板引起的压差对含腐蚀坑点的管道系统的影响。