(electronics) An effect that forces the frequency of an oscillator to change from a desired value; causes include undesired coupling to another frequency source or the influence of changes in the oscillator load impedance.
(petroleum engineering) Withdrawing sucker rods and production tubing from a pumping well prior to cleaning out or replacing parts of the pump.
In painting, the resistance to movement while brushing, resulting from high viscosity of the paint.
Anybody who isn't pulling his weight is probably pushing his luck.
— Franklin P. Jones
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