To this effect, {TAIL ~ means} for sensing {HEAD ~ an abnormal condition} of the machine tool is provided in the vicinity of an essential portion of the machine tool 
To this effect , { TAIL ~ means } for sensing { HEAD ~ an abnormal condition } of the machine tool is provided in the vicinity of an essential portion of the machine tool
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH