{HEAD ~ A system} includes a speed control module, a repeatable component measuring module, and {TAIL ~ a repeatable component correcting module} 
{ HEAD ~ A system } includes a speed control module , a repeatable component measuring module , and { TAIL ~ a repeatable component correcting module }
HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL