roll mark
Metallurgy
noun
A mark produced on sheet metal as a result of rolling with an imperfect set of rollers.
Origin
Late 19th century; earliest use found in American Engineer & Railroad Journal.
| 单词 | roll mark |
| 释义 | roll markMetallurgy noun A mark produced on sheet metal as a result of rolling with an imperfect set of rollers. Origin |
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