ferrules
n. (棍棒頂端等的)金屬箍,金屬環,套圈( ferrule的名詞複數 )
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.
Compression fittings for attaching tubing ( piping ) commonly have ferrules ( also known as olives ) in them.
為附加管 ( 管道 ) 通常有 ( 也稱為橄欖在其中 ) 冷壓頭壓縮配件.