At the same time, by means of the nozzle 40, {HEAD ~ a rinsing fluid}, which contains a solvent, is sprayed against {TAIL ~ the underside} of the cover 20 in order to clean the latter 
is sprayed against
At the same time , by means of the nozzle 40 , { HEAD ~ a rinsing fluid } , which contains a solvent , is sprayed against { TAIL ~ the underside } of the cover 20 in order to clean the latter
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH