大口径: heavy calibre步枪: rifle小口径步枪: small bore rifle; small-bore rifle; small―bore rifle大口径标准步枪: big bore standard rifle短距离小口径步枪射击: gallery rifle shooting小口径步: long rifle大口径: heavy calibre◇大口径短筒小手枪 derringer; 大口径管道 large diameter pipeline; 大口径机枪 large-bore machine gun; 大口径枪 big bore; 大口径输油管 big inch pipe大口径肠衣: wides大口径的: big-inch; heavy-gauge; wide-bore大口径管: large-diameter pipe大口径管道: large diameter pipeline大口径机枪: large bore machine gun大口径胶管: large bore hose; large-bore hose; large-bore silo大口径井: large-diameter well大口径炉: large-bore furnace大口径枪: big bore大口径三通: wide tee大口径水带: big line大口径水炮: big gun大口径天线: wide aperture antenna大口径透镜: large aperture lenses (150mm); large-diameter lens; large-diameterlens大口径钻进: large-hole drilling大口径钻探: large diameter boring; large-diameter boring超大口径自动: very-extra-large orifice automatic sprinkler大口径测向器: wide aperture direction finder
