lead - link
- line segment orientation
- line segment problem
- line segmentation orientation
- line selector
- line sending-end impedance
- line shaped e-beam
- line shielding failure
- line signals
- line simulator
- line skipping
- line source system
- line space
- line space lever
- line space selector
- line spacing
- line spacing key
- line speed
- line splitter
- line splitting device
- line spread function
- line stake
- line strainer
- line stretcher
- line switching system
- line symmetry
- line tearing
- line technique
- line telephony
- line temperature compensating equalizer
- line tension gauge
- line tensioner
- line terminating equipment
- line termination
- line tool
- line tracer
- line transient
- line transmission system
- line turnaround
- line type
- line unit
