The gas supplied to the gas supply tube 7 reaches {HEAD ~ the grooves} 16, taking paths or passages branched from the center of the gas supply tube or passage 7, and diffuses along the grooves 16 in {TAIL ~ the axial direction} of the stress detection mechanism 5 and is then ejected outside 
The gas supplied to the gas supply tube 7 reaches { HEAD ~ the grooves } 16 , taking paths or passages branched from the center of the gas supply tube or passage 7 , and diffuses along the grooves 16 in { TAIL ~ the axial direction } of the stress detection mechanism 5 and is then ejected outside
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH