{HEAD ~ The separation chamber} is positioned in the annularly shaped slot and rotated at {TAIL ~ a predetermined rotational velocity} 
{ HEAD ~ The separation chamber } is positioned in the annularly shaped slot and rotated at { TAIL ~ a predetermined rotational velocity }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL