ferrule

n.

（棍棒顶端等的）金属箍，金属环，套圈；

vt.

装以金属铁；

复数：ferrules过去式：ferruled过去分词：ferruled现在分词：ferruling第三人称单数：ferrules

1. Those black rings on my ferrule are black nickel.
   金属箍上的黑圈是黑镍。
2. A ferrule and eraser are crimped into place on each pencil.
   把金属环和橡皮头固定到每一根铅笔上。

The ferrule effect: a literature review
Ferrule design and fracture resistance of endodontically treated teeth
Optical fiber connector, ferrule used therefor and method for manufacturing ferrule
Effect of a crown ferrule on the fracture resistance of endodontically treated teeth restored with prefabricated posts.
Effect of crown lengthening and ferrule placement on static load failure of cemented cast post-cores and crowns
Optical deposition of graphene and carbon nanotubes in a fiber ferrule for passive mode-locked lasing.
Effects of post-core design and ferrule on fracture resistance of endodontically treated maxillary central incisors ☆ ☆☆ ★ ★★
The influence of post length and crown ferrule length on the resistance to cyclic loading of bovine teeth with prefabricated titaniu...
An in vitro study evaluating the effect of ferrule length on fracture resistance of endodontically treated teeth restored with fiber...
In vitro fracture resistance of endodontically treated central incisors with varying ferrule heights and configurations