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What do the symbols marked in red on the drawing mean?

2023-04-25View Original

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This post was last edited by Chenglin_d1ybh on 2023-4-26 06:07
Reply #22023-04-29
Surface polishing and grinding to achieve the desired roughness
Reply #32023-04-29
Thank you for the answer: handshake
Reply #42023-04-30
It’s probably the processing method – flush grinding, with a precision similar to the roughness mentioned above.

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