running string下: below; down; under; undernea ...入: enter管柱: tubular column下入管柱；下井管柱: running string强行下入管柱工具；减震器: snubber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:下入管柱，即可在微信中查询翻译
