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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,especially a wheellock(特指转轮打火的手枪)。16世纪和17世纪英格兰人和苏格兰人均把手枪称为dag,后来才逐渐改称pistol。 DAGGER PISTOL匕首枪,another name for a knife pistol匕首枪有单管或多管式,在3～5m的距离内使用。 DARDICK达尔迪克手枪,the name of a unique (独特的)cartridge and
High firing rate military barrels or breeches are often chrome plated (chromium plate in bore), to enhance its wear resistance, high temperature and corrosion resistance, improve barrel life. For shotgun barrel, generally do not have chrome. DA (double acting abbreviation) double action. DAG (old style) pistol, an old name for a short pistol, especially a wheellock. In the 16th and 17th centuries both English and Scottish called pistols dag, and later they were renamed pistols. DAGGER PISTOL dagger gun, another name for a knife pistol dagger gun with single or multi-tube, in the 3 ~ 5m distance use. DARDICK daldik pistol, the name of a unique (unique) cartridge and