دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the product of volts and amperes in an AC circuit when voltage and current are measured separately. If voltage and current are not in phase, apparent power is greater than true power.

n: a kind of solids control technology being in phase of experiment ,namely setting an inverse swirler making the fluid in the drill pipe flow into the container in a tangent line

adj: in an AC circuit voltage and current are in phase when they begin, reach a maximum in the same direction, and return to zero at exactly the same time. Two or more alternating emfs of the same frequency are in phase when their polarities and instantaneous values occur at the same time.

n: 1. The loss in amplitude and change in phase of an electromagnetic field as it penetrates into a conductive medium. In an induction log, the skin effect causes a reduction of the R-signal (in-phase) and an increase in the X-signal (out-of-phase) at the re