... cannon 空心轴，粗短管 cannon plug 圆柱形插头 cannon tube shield 炮形X射线管套 ...
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... 圆柱形船首：cylindrical nose 圆柱形插塞接头：cannon plug 圆柱透视的：cylindrical perspective ...
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cannon n plug 圆柱形插头
·2,447,543篇论文数据，部分数据来源于NoteExpress
Dena Libner, a spokeswoman for the Central Park Conservancy, said the workers found the munitions after removing a concrete plug from the mouth of the cannon.
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