The first module of the ISS was launched into space in 1998 and the initial construction of the station took about two years to complete. Human occupation of the station began on November 2, 2000. Since that time, the ISS has been continuously occupied.
rimfire. ( 1 of a cartridge) having the primer in a rim encircling the base. Compare center-fire (def 1). ( 2 of a firearm) designed for the use of such cartridges.
Rimfire and Centerfire are words that are used to refer to different types of cartridges as well as rifles that make use of these cartridges. Someone using a rifle for the first time finds it difficult to understand the difference between Rimfire and Centerfire.t is the firing pin of the bullet that hits the primer to create a small explosion. It is this small explosion that sets off the gunpowder, and the bullet is propelled out of the barrel of your gun. The location of the primer is what makes all the difference between a Rimfire and a Centerfire cartridge.