pigging back
Metallurgy
noun
The addition of more pig iron to the charge in an open-hearth furnace in order to raise its carbon content.
Origin
Early 20th century; earliest use found in Journal of the Iron and Steel Institute.
| 单词 | pigging back |
| 释义 | pigging backMetallurgy noun The addition of more pig iron to the charge in an open-hearth furnace in order to raise its carbon content. Origin |
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