holdhold circuithold control speed controlhold currenthold timehold up timeholdingholding circuitholding currentholding deviceholding registerholding voltageholding windingholehole concentrationhole conductionhole conductivityhole currenthole current densityhole electron pairhole emissionhole injectionhole lifetimehole mobilityholing currenthollowhologramholographic bar code readerholographic memoryholographyholomicrographyhomehome mobile stationhominghoming antennahoming beacon radio homing beaconhoming devicehoming guidancehomogeneityhomogeneoushomogeneous equationhomogeneous fieldhomogeneous magnetic fieldhomogeneous radiationhomojuntionhomopolarhoodhookswitchhookuphookup wire
