Double line-line voltage control
hydraulic line connector
individual line connector
line-line extreme distance
line-line topological relation in traffic network
loss-free line (=lossless line =lossless transmission line)
SDSL Single-Line Digital Subscriber Line，Single-Line DSL
Video assisted thoracoscopy surgery Video assisted minithoracotomy surgery
10-line to 4-line BCD encoder
A line used as both sterile and maintaining line
agonic line {agonic line of no declination}