planking machine
Hat-making
noun
A machine used to harden hats by rubbing and steaming.
Origin
Late 19th century; earliest use found in Edward H. Knight (1824–1883), patent lawyer and expert in mechanics.
| 单词 | planking machine |
| 释义 | planking machineHat-making noun A machine used to harden hats by rubbing and steaming. Origin |
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