基本解釋震動器 仲縮節(jié)英漢例句雙語例句This topic originates from the sub-topic of the national grain bumper science and technology project.本課題來源於國家糧食豐産科技工程的子課題。A disadvantage of the bumper sub is maintenance costs both for the tool itself and lost time due to tripping pipe when one fails.緩沖短節(jié)的缺點是維護工具本身的費用和失傚時起下鑽造成的時間損失。In light of the commonly seen downhole breakdown of drilling pipe sticking in the drilling process, the new-type fully hydraulic while-drilling bumper sub was developed.針對鑽井過程中常見的井下卡鑽事故，研制了新型全液壓式隨鑽震擊器。bumper sub更多例句詞組短語短語bumper r sub 震擊器Lubricated fishing bumper sub 閉式下?lián)羝?/li>long strke bumper sub 長沖程震擊器sealed bumper sub 油封式震擊器fishing bumper sub 打撈伸縮節(jié);打撈緩沖器bumper sub更多詞組專業(yè)釋義能源科學技術震擊器地球科學伸縮鑽桿