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
director specially engaged
Population engaged in food related work
separation of the granted technical title and engaged technical title
the port engaged in politics
vessels engaged in fishing
0-1 symmetric matrix of positive line
±500 kV ultrahigh voltage DC transmission line
1 000 kV AC power transmission line