inside bop

基本解釋

It is an inside BOP (blowout preventer)in the drill string.
投入式止回閥是鉆柱內防噴器。
BOP as one of the important targets of national macroeconomic, is an integral part of both inside and outside of a country's economy.
國際收支平衡作為國家宏觀經濟的重要目標之一，是一國經濟內外均衡不可或缺的組成部分。
At the present, defects inside a BOP are mainly inspected by conventional methods, such as UT, MT, PT, etc. and it bears a pressure test.
目前，對防噴器等井控裝置檢測內部缺陷主要采用超聲波、磁探、滲透等常規(guī)檢測以及進行耐壓試驗，難以發(fā)現和判定已有裂紋的擴展。