The longitudinal section of the solid portion around the holes of the conductive porous structure is formed into an essentially egg like shape, and {HEAD ~ the acute angle side} of {TAIL ~ the egg like longitudinal sectional shape} is disposed so as to direct to the waterproof membrane 
of
The longitudinal section of the solid portion around the holes of the conductive porous structure is formed into an essentially egg like shape , and { HEAD ~ the acute angle side } of { TAIL ~ the egg like longitudinal sectional shape } is disposed so as to direct to the waterproof membrane
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 HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH