Means for sensing an abnormal condition of {HEAD ~ the machine tool} is provided in the vicinity of {TAIL ~ an essential portion} of the machine tool 
Means for sensing an abnormal condition of { HEAD ~ the machine tool } is provided in the vicinity of { TAIL ~ an essential portion } of the machine tool
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH