دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the phenomenon of mutual impection that occurs to fluid and piston port , which caused by the fluid in pump is incontinual or the action of fluid and piston is not synchronous.

adj: occurring at the same moment. For two or more generators, it means being phased together.

n: an AC motor designed to keep time" with the AC power supply;it rotates at the same speed as the alternator that supplies the current or at a fixed multiple of that speed.

n: in an electric motor, the speed of the rotating field: = number of poles 120xfrequency(hertz)

n: a set of base and derived units corresponding to a particular group of quantities. synchronous speed (rpm)