{TAIL ~ First and second grinding apparatuses} are provided at a mounting portion of {HEAD ~ the table}, opposite one another 
{ TAIL ~ First and second grinding apparatuses } are provided at a mounting portion of { HEAD ~ the table } , opposite one another
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH