Moreover, using the light source device allows observing an subject at high resolution, and allows processing {HEAD ~ a workpiece} at {TAIL ~ high resolution} 
at
Moreover , using the light source device allows observing an subject at high resolution , and allows processing { HEAD ~ a workpiece } at { TAIL ~ high resolution }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL