A pixel structure including a substrate, a scan line, a data line, a common line, an active device, a pixel electrode, a passivation layer and a transition auxiliary electrode is provided. The semiconductor memory device having four pipelining latches for prefetching 4-bit data outputted from at least one bank in response to a start address of the 4-bit data and control signals includes a first data multiplexing unit, a second data multiplexing unit, a third order multiplexing unit and a forth order multiplexing unit. When said inclination and anteversion shafts are aligned with central anatomical structures such as symphysis pubis and middle of first sacral vertebra will result in correct placement of the acetabular cup at the desired version. The velocity of the observational electron beam that has been accelerated to the positive potential is reduced to the ground potential by another of the plurality of electrodes which form the observation means. Water-mixed emulsions are obtainable from this concentrate, which may be used as a cleaning, corrosion protection or cooling lubricant emulsion in metals processing.