N-COUNT A ferrule is a metal or rubber cap that is fixed onto the end of a stick or post in order to prevent it from splitting or wearing down. 装于棍棒顶端，以防止其裂开或磨损的金属帽或橡皮帽 [正式][1]
boiler ferrule 锅炉烟管套圈
Ferrule brass 费鲁尔铅黄铜
cable ferrule 电缆套圈
Ferrule Type 卫生型 ; 插针类型 ; 管式
FERRULE COUPLING 金属箍接头
adjustable ferrule 可调夹套
double ferrule 卡套接口
furnexpert ferrule 锅炉烟管套圈
ferrule detail 箭杆金属箍[1]
Those black rings on my ferrule are black nickel.
金属箍上的黑圈是黑镍。
The complete story of why the center of my ferrule has no black nickel on it would take pages to explain.
为什么在我的金属箍的中间部分没有黑镍这个问题，就得用上好多页纸才能回答清楚。
Easy, permanent assembly between the tubing and fittings: push the tubing over the fitting ferrule until the tubing "clicks" into place.
易之间的管材，管件常设大会：推入拟合套圈油管，直到管“点击”到位。[1]