clear mark [= clearing mark]

End-of-Tape Mark (EOT Mark)

tidal bench mark [= tidal mark]

1Bit Polarity Coincidence Correlator

Aborted polarity transition

activating tungsten inert-gas welding with direct current straight polarity mode

additive polarity

adjustment technology of surface polarity

Adsorbent with moderate polarity

alternate polarity sweep

Alternating polarity

alternating-polarity sampling

Aromatic polarity scale

Astronomical polarity time scale

atomic polarity

avariable polarity welding power supply

battery polarity

Bias voltage polarity

Bipolar Polarity Violation BPV