【化】 threaded joint
screw thread; whorl; worm
【机】 screw thread; thread
joint; anastomosis; cement; coalesce; commissure; fay; inosculate
inosculation
【计】 interfacing
【医】 attachment; coapt; coaptation; conjugation; connection; cooptation
copulation; junctura; nexus; synapsis; syndesis; synthesis; synthesize
zygo-; zygosis