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单词 quarter-hollow
释义

Definition of quarter-hollow in English:

quarter-hollow

noun
  • A concave moulding that has an arc which is (approximately) a quarter circle; (also) an engraving tool used to make convex or concave mouldings (more fully"quarter-hollow tool").

Origin

Mid 19th century; earliest use found in Charles Holtzapffel (1806–1847), mechanical engineer and technical writer.

 
 

Definition of quarter-hollow in US English:

quarter-hollow

noun
  • A concave moulding that has an arc which is (approximately) a quarter circle; (also) an engraving tool used to make convex or concave mouldings (more fully"quarter-hollow tool").

Origin

Mid 19th century; earliest use found in Charles Holtzapffel (1806–1847), mechanical engineer and technical writer.

 
 
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更新时间:2024/9/20 14:24:41