drill stem顿: pause; halt; stop锻模: forging die钻杆: bull rod; bar; rod; drill st ...顿锻模: upsetting die顿锻模下套管绳: calf line; calfline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:顿锻模钻杆,即可在微信中查询翻译