破冠器

crown, vertex

three-quarter crown【口腔】

crown

post crown with core

crown-heel length, CH length,standing height; 又称“ 冠踵长”、“立高”。

bisfuranyl-18-crown-6

crown thinning, thinning from above

hobbing with the tool having the same profile as the tooth, teeth of a crown, bevel gear