hollow drill steel中空: cavity; medium altitude钻探: probing; misering; testborin ...钢: sharpen; strop; whet中空钻杆: hollow drill string中空钻杆钢筋: hollow drill steel bar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:中空钻探钢,即可在微信中查询翻译