دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

a mechanism that allows the motor speed and power to optimally match the requirements of a pump.

n: The rotary type viscosimeter that can change the velocity arbitrarily.

n: see rotameter.

n: the angle by which a compass needle deviates from true north.

vertical annular separation production system.

n: an elastomer seal energized by pressure. While it is circular in shape, the seal has a V -shaped cross section. See also a-ring.