irri - knoc
- junction line network
- junction manhole
- junction mixing
- junction piece
- junction pipe
- junction position
- junction relay set
- junction service
- junction switching position
- junction technology
- junction traffic
- junctional complex
- junctional membrane
- junctor
- juncture of plates
- junior beam
- junior party
- junior programmer
- junior-sized H-section
- junk basket
- junk code
- junk grooves
- junk passage
- junk sub
- Jupiter orbiter probe
- jury problem
- just hopping
- just noticeable difference
- just savings
- just-in-time
- just-in-time manufacturing
- just-in-time production
- just-in-time system
- JUST-PC
- justice
- justifiable digit time slot
- justification
- justification block
- justification control digits
- justification rate
