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单词 trunnion
释义
N5883020trunnionSpoken.0Fiction.0Magazine.6Newspaper.0Academic.14

trunnion

/ˈtrʌnjən/
noun
1
a pin or pivot forming one of a pair on which something is supported
耳轴, 枢轴。
1.1
a supporting cylindrical projection on each side of a cannon or mortar
炮耳。
词源
early 17th cent.: from French trognon 'core, tree trunk', of unknown origin.
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