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介绍了采用电解一射流加工法在油管外壁表面加工标记（号）的基本原理及其过程，通过实验总 结出了较为合理的工艺规范。
The basic principle and process of machining mark (number) on the outer wall of tubing by electrolysis - jet method are introduced. The reasonable process specification is summarized through experiments.