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