bumper sub

常見例句

雙語例句

• This topic originates from the sub-topic of the national grain bumper science and technology project.
  本課題來源于國家糧食豐產(chǎn)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(hù)工具本身的費用和失效時起下鉆造成的時間損失。
• 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.
  針對鉆井過程中常見的井下卡鉆事故，研制了新型全液壓式隨鉆震擊器。
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