Double-stage nitriding 双重氮化法 ; 二级氮化

single-stage nitriding [机] 一段渗氮 ; 等温渗氮 ; 单级氮化

single stage nitriding 等温渗氮

double stage nitriding 两段氮化法

multiple-stage nitriding [冶] 多段渗氮

multiple stage nitriding 多段渗氮

single e stage nitriding 等温渗氮