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
Automatic Loading and Unloading
Automatic Unloading Automobile
berth occupancy for fish unloading
best crude oil unloading volume per annum