| http://www.w3.org/ns/prov#value | - The former module is in such a shape as is obtained by punching a disc out of a flat plate type separation membrane and setting the disc directly in place on a holder and the latter module is in such a shape as is obtained by similarly punching a disc, joining the disc along the circumference thereof to a support, thereby forming a unit, and superposing a plurality of such units.
|
