blowhole segregation

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Deoxidized steel — is steel that has a certain degree of oxygen removed from the melt during the steelmaking process. There are four types, ranging from fully deoxidized to slightly deoxidized: killed, semi killed, capped, and rimmed.[1] Contents 1 Types 1.1 Killed … Wikipedia
Marine terrace — A marine terrace, coastal terrace[1], raised beach or perched coastline is a relatively flat, horizontal or gently inclined surface of marine origin[2], mostly an old abrasion platform which has been lifted out of the sphere of wave activity… … Wikipedia

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