THE three principal crystal structures of the metallic elements, the face-centred cubic (f.c.c), the body-centred cubic (b.c.c.) and the hexagonal close-packed (h.c.p.), follow a cyclic pattern as sub ...
A series of water and dustproof D-sub covers can protect unused ports for D-sub shells sizes 1, 2, and 3 against water or contaminate damage. This series includes protective covers for DB9 or HD15 ...