large diameter boringlarge-diameter boring大口径: heavy calibre钻探: probing; misering; testborin ...大口径钻探设备: large-scale drilling system大口径钻进: large-hole drilling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下载手机词典可随时随地查词查翻译
