释义 |
膛线tángxiàn枪膛或炮膛内的螺旋形凹凸线,凸起的叫阳线,凹下的叫阴线。作用是使发射出的弹头旋转飞行,以增加射程、命中率和侵彻力。{rifling; helical threads cut in a rifle or gun barrel, with the protruding parts known as yang lines and the concave parts known as yin lines, to cause the bullet to circumgyrate while flying so as to increase the range, accuracy and piercing force;}也叫also来复线{láifùxiàn}。 |