دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

a patented screen design that allows gravel packing slurry to flow past an annular bridge point that would normally stop the placement of gravel.

n: Breaks at different joints in turn in order to check every joint periodically and avoid joint galling and thread fracturing.

n: (A C) current in which the charge-flow periodically reverses and whose average value is zero. Compare direct current.

n: The current whose intensity and direction alter periodically with time.

n: an electric generator that produces alternating current.

n: (Ac) a white or gray midlevel cloud that appears as closely arranged rolls. This type of cloud is composed of either ice crystals or water droplets.

n: a bluish or gravish layer of uniform mid-level clouds that cover large portions of the sky. This type of cloud is composed of either ice crystals or water droplets.