steel sand drilling钢: sharpen; strop; whet砂: sand; grit钻进: worm one's way in; drilling钢砂钻井: shipdrilling; steel shot drilling钢砂钻孔: shot boring下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:钢砂钻进，即可在微信中查询翻译
