【實用程式庫與試用程式app】Gun|最夯免費app-綠色工廠好玩App

A gun is a normally tubular device designed to discharge a projectile or other material. The projectile may be solid, liquid, gas or energy and may be free, as with bullets and artillery shells, or captive as with Taser probes and whaling harpoons. The means of projection varies according to design but is usually effected by the action of gas pressure, either produced through the rapid combustion of a propellant or compressed and stored by mechanical means, operating on the projectile inside an open-ended tube in the fashion of a piston. The confined gas accelerates the movable projectile down the length of the tube imparting sufficient velocity to sustain the projectile's travel once the action of the gas ceases at the end of the tube or muzzle. Alternatively, acceleration via electromagnetic field generation may be employed in which case the tube may be dispensed with and a guide rail substituted.

This is a free android Guns app.

Put down your side work,Had it immersed in a happy atmosphere,enjoy this happy occasion.

Embellish your Android screen,with the gorgeous Guns scene.