sectional rod拧: pigheaded; stubborn接: come into contact with; come ...式: type; style钻杆: bull rod; bar; rod; drill st ...焊接式钻杆接头: weld-on type tool joint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:拧接式钻杆，即可在微信中查询翻译
