دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: 1. an accumulation of liquid above a normal or average level, or a sudden increase in its flow rate above a normal flow rate. 2. the motion of a mobile offshore drilling rig in a direction in line with the centerline of the rig, especially the front-to-back motion of the rig when it is moored in a seaway.