Furthermore, if the retainer 11 in directly welded to the opening edge, it is possible to prevent water from entering {HEAD ~ the gap} between the opening edge 10 and {TAIL ~ a retainer} 11 
between
Furthermore , if the retainer 11 in directly welded to the opening edge , it is possible to prevent water from entering { HEAD ~ the gap } between the opening edge 10 and { TAIL ~ a retainer } 11
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH