piercing钻进: worm one's way in; drilling钻孔: drill; bore; drill hole perf ...钻粒钻进钻孔: shot borehole金刚石钻进的钻孔: diamond drill hole; diamonddrill hole扇形布置的钻孔的钻进: fan drilling下载手机词典可随时随地查词查翻译