Social contact space of neighborhood
butt contact line abrasion ratio
overhead contact line equipment
three-phase contact line
mapping between the operation space and pattern space
separating dry space from moist space
A line used as both sterile and maintaining line
agonic line {agonic line of no declination}
Dual purpose line with nucleic male sterile line
Fault Cutoff Line Allan Line
Male sterility line and maintainer line
velocity line of arc line short band