دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a cylinder and piston device that uses hydraulic pressure for pushing, lifting, or pulling. It is commonly used to raise portable masts from a horizontal to a vertical position, for leveling a production rig at an uneven location, or for closing a blow- out preventer against pressure.

n: an assembly of hydro cylinder or piston which depends on hydraulic pressure to pushing, pulling and rising.