| 单词 | tree-coupling | 
| 释义 | > as lemmastree-coupling   tree-coupling  n. in a vehicle, a piece connecting a ‘single-tree’ or swingletree and a double-tree. ΘΚΠ society > travel > means of travel > a conveyance > vehicle > cart, carriage, or wagon > parts of cart or carriage > 			[noun]		 > swingle-tree > parts or attachments of roller bolt1796 wagon-hammer1875 tree-coupling1877 tree-iron1877 1877    E. H. Knight Pract. Dict. Mech.  				Tree-coupling, a piece uniting a single to a double tree. < as lemmas  | 
	
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