rho837

題外話! Depleted uranium armor piercing ammunition 好可能表現勁過diamond bullet! Diamond are very hard (3D colvant bonding structure) but brittle to certain degree! Some gun barrel chamber have satfire (man made diamond) coating! Characteristic is durable and smooth, but if shooting APA still wear quick.

[ 本帖最後由 rho837 於 22-3-2011 11:43 編輯 ]