{TAIL ~ The casing} 1 is formed with a recess or projection 1a, 1b, thus preventing a slip of {HEAD ~ the resin member} 3 from occurring 
{ TAIL ~ The casing } 1 is formed with a recess or projection 1a , 1b , thus preventing a slip of { HEAD ~ the resin member } 3 from occurring
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH