短語詞組短語gun -barrel type plug 槍管式塞子life of gun -barrel 炮管壽命Non -gun barrel perforation test 無槍身射孔試驗(yàn)heaudio -videoy gun barrel 重炮掌控者titanium alloy light -weight gun barrel 鈦合金輕質(zhì)槍管 返回 gun-barrel