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