{HEAD ~ Preferably, the depth “DG}” of the race is equal to or greater than {TAIL ~ the length} of the lip of the largest cap to be opened 
is equal to
{ HEAD ~ Preferably , the depth “ DG } ” of the race is equal to or greater than { TAIL ~ the length } of the lip of the largest cap to be opened
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL REL OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH