projected-vertical-plane method of orienting按: press; push down给定: given; preset垂直面: perpendicular plane; vertica ...方向: direction; orientation钻杆: bull rod; bar; rod; drill st ...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:按给定垂直面方向钻杆定向法，即可在微信中查询翻译
