keyway

n.

扁形钥孔，键沟；

Detachable pusher-vasoocclusive coil assembly with interlocking ball and keyway coupling
Surgical adhesives mixing and dispensing implement
Intrusion phenomenon in combination tooth-implant restorations: a review of the literature.
Resistance to torsional forces of various post and core designs
Algorithmic aspects of alternating sum of volumes. Part 1: Data structure and difference operation
Study of Mitigation Strategies for Progressive Collapse of a Reinforced Concrete Commercial Building
Drill director
Bottle keying system
Spring mounted key for electrical switch
COAXIAL CABLE CONNECTOR