casing guncasing perforator套管: drivepipe; annular tubes; br ...射孔: perforation; gun perforation器: implement; utensil; ware大套管射孔器: big casing gun油管射孔器: tubing perforator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:套管射孔器，即可在微信中查询翻译
