高射速的军用枪管的线膛或弹膛常采用镀铬(chromium plate in bore),以增强其耐磨损、耐高温和耐腐蚀性能,提高枪管寿命。对于猎枪枪管,一般不用镀铬。 DA(双动的缩写)double action. DAG(旧式)手枪,an old name for a short pistol,esp...
DROP SHOT软铅弹。DROP OFBULLET弹道降,the vertical distance abullel has fallen under the influence ofgravity,during its flight(弹头飞行时受重力影响垂直下降的高度)。DROP ATHEEL枪托底板(抵肩部)下降量,thevertical distance...