| 摘要 |
FIELD: steel engraving. SUBSTANCE: preliminarily the surface to be engraved is poured on with pickle by no more than two times, engraving of the surface is performed by pouring with pickle from a hose, and slime is removed from the face side of the surface to be engraved with simultaneous pouring with pickle of the back side. EFFECT: enhanced quality of engraving. 2 cl
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