power spectra power spectral power spectral density power spectrum power speed power splitter power sports power spot power sprayer power spring power stage power stand power standard power standby power star power state power states power station power station has power station was built power station will power stations power stations have power status power steering power steering pump power steering system power still power stone power storage power storage device power strip power strips power stroke power structure power structures power struggle power struggles power substation power suit power supplied power supplier power suppliers power supplies power supply power supply adapter power supply apparatus power supply box power supply cable power supply circuit power supply company power supply connection power supply connector power supply control power supply cord power supply device power supply has power supply input power supply is connected power supply is not power supply is switched power supply line power supply lines power supply may power supply means power supply module power supply must power supply needed power supply network power supply only power supply plug power supply provided power supply provides power supply should power supply socket power supply source power supply switch power supply system power supply systems power supply unit power supply units power supply voltage power supply when power supply will power supplying power support power surge power surges power survey power switch power switch is turned power switch off power switches power switching power system power systems power take off power take-off power takeoff