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
3 He proportional counter
3He proportional counter
4π flow-gas proportional counter
4πβ proportional counter
acetylene-filled counter
acoustic emission counter
activated charcoal counter current adsorption
active counter measures