图为德国研制的4.73毫米全埋式无壳弹,其弹丸全部镶嵌在火药柱体内。大家都知道,传统轻武器的子弹都有一个金属制的圆柱桶——弹壳,而弹头就镶嵌在弹壳之上并与其密闭为一体。这种铜制弹壳可塑性强,内部可填加发射用药,底火被撞击后引燃发射药,产生压力强大的高热气体,从而推动子弹前进,飞向目标。但这种子弹具有质量重、可携带量少等不足。为此,人们研制出了无壳子弹。 The picture shows the 4.73 mm all-in-one shellless bullet developed by Germany. The projectile is all embedded in the powder column. As we all know, bullets of the traditional light weapons have a cylindrical cylinder made of metal - the shell, and the bullet is embedded in the shell and sealed with it. This copper shell flexible plastic, the internal can be filled with launch medication, the bottom of the fire was fired after firing propellant, resulting in a strong high-pressure hot gas, which propels the bullet forward, fly to the target. However, this bullet has a heavy weight and can carry less. To this end, people developed a shell-free bullet.